Thursday, July 30, 2015

Asset Pricing Part II

Asset Pricing Part II, the second half of my online PhD class in asset pricing, starts up next week. Part I and Part II are separate and independent courses, and you don't need a lot of the material of Part I to do Part II. This is a "summer school" session set up especially for PhD students in finance.

Syllabus:

Week 1: a) The Fama and French model b) Fund and performance evaluation.

Week 2: Econometrics of classic linear models.

Week 3: Time series predictability, volatilty and bubbles.

Week 4: Equity premium, macroeconomics and asset pricing.

Week 5: Option Pricing.

Week 6: Term structure models and facts.

Week 7: Portfolio Theory and Final Exam.

Tuesday, July 28, 2015

Mankiw and Conventional Wisdom on Europe

Greg Mankiw wrote a week ago in the Sunday New York Times, ably explaining the  conventional view that the Euro is a bad idea, and that even countries as small as Greece (11 million people) need national currencies. Excerpt:
Monetary union works well in the United States. No economist suggests that New York, New Jersey and Connecticut should each have its own currency, and indeed it would be highly inconvenient if they did. Why can’t Europeans enjoy the conveniences of a common currency?

Two reasons. First, unlike Europe, the United States has a fiscal union in which prosperous regions of the country subsidize less prosperous ones. Second, the United States has fewer barriers to labor mobility than Europe. In the United States, when an economic downturn affects one region, residents can pack up and find jobs elsewhere. In Europe, differences in language and culture make that response less likely.

As a result, Mr. Friedman and Mr. Feldstein contended that the nations of Europe needed a policy tool to deal with national recessions. That tool was a national monetary policy coupled with flexible exchange rates. Rather than heed their counsel, however, Europe adopted a common currency for much of the Continent and threw national monetary policy into the trash bin of history.

Making matters worse, however, was the common currency. In an earlier era, Greece could have devalued the drachma, making its exports more competitive on world markets. Easy monetary policy would have offset some of the pain from tight fiscal policy. Mr. Friedman and Mr. Feldstein were right: The euro has turned into an economic liability that has exacerbated political tensions. For this, the European elites who pushed for the currency union bear some responsibility.
I am a big euro fan. This seems a good moment to explain why I don't accept this conventional view, despite its authority from Milton Friedman to Marty Feldstein and Greg Mankiw and even to Paul Krugman.

Short: I am also a big meter fan. I don't think each country needs its own measure of length, or to shorten it when local clothiers are having trouble and would like to raise cloth prices.

Longer: This conventional view is deeply old-Keynesian. In this view, each region, including ones as small as Greece (11 million) or Ireland (4.6 million), less than the Los Angeles metro area (13 million), suffers "demand" shocks, which governments must actively offset with fiscal stimulus or monetary policy.

This strikes me as one of those many stories that people repeat all the time until they believe it, but whose foundations are seldom examined.  (There is a "thesis topic" label here for such examination. Comparisons of US states to European countries on these dimensions seems fruitful.)

What are these local demand shocks for small open economies in the eurozone? "Aggregate demand" is, well, aggregate, not regional.  Changing fortunes of local industries is more what we call "supply," not "demand." For small open economies (LA) much "demand" comes from other cities and states, not local.

What is this "fiscal union," apparently providing countercyclical Keynesian stimulus at the right moment?  In the US, we have Federal contributions to social programs such as unemployment insurance. Europe has the common agricultural policy and many other subsidies. We do not have systematic, reliably countercyclical, timely, targeted, and temporary local fiscal stimulus programs. Just how big is the local cyclical variation in state or local level government spending or transfers? (And why does fiscal union matter so much anyway? If you're a Keynesian, then local borrow and spend fiscal stimulus should be plenty. The union matters only when countries near sovereign default and can't borrow.)

The local and cyclical qualifiers matter. Yes, both US and Europe have some pretty large cross-subsidies. But most of these are permanent. The rest of the nation subsidizes corn ethanol to Iowa year in and year out. Social security payments come year in and year out, and transfer money from states with workers to those with retirees. Monetary policy has at best short-run effects, so the argument for currency union has to be about local cyclical, recession-related variation in economic fortunes, not permanent transfers.

And Federal fiscal transfers only started in the 1930s. We had a currency union in 1790, and no substantial Federal fiscal transfers at all until the 1930s. How did we get along all this time?

A sense in which this is a centrally old-Keynesian argument is that Greg is not making a second, common, and also wrong (in my view) case for national currencies: the view that currency union demands central bailouts of sovereign debt.  No, Greg (and the conventional wisdom he echoes) has in mind only the necessity of Keynesian countercyclical policy. Aphorisms such as "currency union demands fiscal union" are dangerous, as they have many meanings.

So, this conventional view presumes that there really are big regional "demand" shocks; that there is a big, important Keynesian fiscal multiplier, even away from the zero bound, and that our government really does a lot of recession-related fiscal transfers, larger than Europe's (agricultural subsidies, etc.) and that the US pre WWII was a disastrous too-large currency area. I'm not convinced on any of these points.

(To be sure, I will admit a multiplier of about one for state to state transfers. If the federal government takes money from the citizens of New York, and sends the money to people in Florida,  businesses will move from New York to Florida to follow the money and GDP will rise in Florida. And decline in New York.)

Consider Greece, "In an earlier era, Greece could have devalued the drachma, making its exports more competitive on world markets. Easy monetary policy would have offset some of the pain from tight fiscal policy." So, Greece's GDP is falling because of "tight fiscal policy?" Calamitous regulation, corruption, closed markets, and now closed banks, frozen payments are not relevant? Tight fiscal policy? Greece is still running primary deficits. After blowing through one and a half GDP's worth of what are now transfers from the rest of the EU, they've run through another half a GDPs' worth, and GDP collapses more. Really, Greece's economic problems are.... a lack of adequate borrowing and spending? And all Greece needs is one more devaluation, and suddenly will be shipping Porsches to Stuttgart in return for worthless pieces of paper rather than the other way around?

Greg passes on the labor mobility story. Here too I'm dubious and curious to see numbers. The story is also told that there is less and less labor mobility in the US, especially of people leaving dying regions. And there are lots of Polish-plumber stories from Europe, that open borders leads to lots of migration.  Here again, cyclical migration, on the scale for which  monetary policy can substitute, seems unlikely. How big are business-cycle frequency migration flows across states in the US vs. Europe?

Again, the US  until 1933 poses an interesting challenge. Your school stories of westward migration were not a business cycle frequency response to demand shocks. And when people traveled by horse or foot, the vast majority of Americans never moved more than 20 miles from where they were born. The costs of labor mobility in Europe today are vastly smaller than the costs of labor mobility in the US 19th century.

Conversely, and perhaps more centrally, I  less trusting of the stabilizing influence of central banks. Dispassionate omniscient central banks can, in theory, wisely spot demand shocks and cleverly devalue currencies to offset them, while not responding to supply shocks, political demands, and so forth. The same technocrats could quietly redefine the meter as needed to let tailors respond to shocks without changing prices.

But the history of small-country central banks is not so reassuring. Grece and Italy's repeated devaluations and inflations did not bring great prosperity.

Joining a common currency is a pre-commitment against bad monetary policy as well as foreswearing of hypothetical good monetary policy. Political forces seldom think there's enough stimulus.  When Greece and Italy they joined the euro, they basically said, defaulting and inflating now will be extremely costly. They were rewarded for the precommitment with very low interest rates. They blew the money, and are now facing the high costs they signed up for. But that just shows how real the precommitment was.

Micro, macro and politics interconnect. The case for separate currencies is to protect the economy from sticky wages, sticky prices, and sticky people. But none of these stickinesses are written in stone. A plausible answer to my question about pre-new deal US is that prices and wages were not sticky (whatever that means) before the era of regulation. Well, that is a loss, and only very imperfectly addressed by artful devaluation of the currency.  Not every block can have its own currency, so local and industry variation within a country remains hobbled by sticky prices, wages, and people. If sticky wages,  prices and people are the central economic problem, we ought to have a lot of policies to unstick them. We do the opposite, and Europe even more so. The very social programs that Greg implicitly praises for fiscal stimulus tie people to location and undermine labor market flexibility.

The strongest case for a separate currency might come from a small economy like Chile, which sells one product (copper), subject to big price fluctuations, and otherwise is pretty closed, and has institutions with sticky nominal wages that it doesn't want to fix. When the price of copper declines, price times marginal product of labor declines, so real wages should decline, and the value of haircuts provided to copper miners should decline as well. Chile may prefer to keep nominal wages steady and let the exchange rate rather than wage rate discourage imports.

But even Chile exports a lot more than copper these days. Texas is still booming despite a large decline in oil prices. The same argument does not hold for company towns within the US, which do not use their own currency. Stanford  has extremely sticky wages (tenure), and suffers "demand" shocks, (positive lately), without offsetting fiscal stimulus and tremendous labor immobility. It takes a year to hire faculty. But nobody thinks Stanford should have its own currency, and periodically devalue that currency. Why not? Because we are open.

So I think a lot of the conventional view seems to think implicitly of fairly closed economies, operating in parallel. But Europe's economies are open. Moreover, the whole point of the eurozone is to open them further. Small open economies are much worse candidates for their own currency.

Surely each block should not have its own currency, nor each city. We'd probably all agree that very small countries should not -- Luxemburg, say. So the question is really whether the Greece that Greece wants to be -- more open than today -- is effectively of the same size.

So, to sum up, Greg's article very nicely summarizes the conventional view. Recognize that this conventional view is deeply old-school Keynesian, both in its view of fluctuations, the need for constant "demand" management, and the success of "demand" managers to do their job. There is room for disagreement on that theory, and more productively on the underlying facts Greg passes on.


Monday, July 27, 2015

Ben-Gad and the Minotaur

Michael Ben-Gad has a smashing review, "Into the Labyrinth", of Yanis Varoufakis' The Global Minotaur (Disclaimer: I have not read it and don't intend to.) It's a great piece of writing as well as a cogent analysis. Some excerpts:
"The idée fixe that dominates The Global Minotaur, and apparently dominated Mr Varoufakis’s squabbles with the other Eurogroup ministers of finance, is that some countries are inherently more productive than others and therefore always generate current account surpluses, while others always generate deficits, and fixed exchange rates or monetary unions only exacerbate this imbalance. Hence, for the world economy to function, the surpluses need to be recycled though a system of regular transfer payments from the core to the periphery.
Why do these imbalances emerge? According to the theory of comparative advantage as formulated by David Ricardo in the early 19th century, different countries specialise in the production of particular goods and then exchange them for others, and trade is mutually beneficial even if some countries are more efficient at producing all goods. Mr Varoufakis’s theory rejects all this. Instead, he argues, some countries are destined to specialise in the production of goods and services, while others on the periphery will forever specialise in consuming them. Put into layman’s terms, what this means is that the people of Germany, the Netherlands, and Finland produce cars, wooden clogs, or mobile phones and sell them to the people of Greece, who pay for it all with money – and to make this trade sustainable the cash needs to be regularly replenished in an endless loop by the people of Germany, the Netherlands, and Finland.
This is a story we hear quite often beyond Mr. Varoufakis -- that a currency union requires countries to be similar, with similar productivity. I'm glad to see it so effectively skewered. In Ricardo's famous example, Portugal sells wine to Britain, which sells wool to Portugal, even if one is better at both than the other. They were on a common currency, gold.

On predictable US-bashing:
In Mr Varoufakis’s world the biggest villains are companies such as Walmart that exploit their efficiency to immiserate communities by making them pay less And of course the worst thing about Walmart is that it is American.
....Apparently, between the end of the war and the collapse of the Bretton Woods agreement in 1973, the Americans had a global plan, helpfully labelled ‘the global plan’, to dominate the world by permanently running current account surpluses and paying down its debt. Then this ended and was replaced by a new global plan to dominate the world by running permanent current account deficits and letting its debt soar. Devious Yanks. 
This last paragraph gets the golden skewer award for prose.
First,  he would have all remaining government debts still owed to banks written off. Why? Well, everyone hates banks, and it is apparently a neoliberal myth that their shares are owned by pension funds, university endowments or just ordinary people saving for retirement. Banks are really owned by Bond villains who live underneath hollowed-out volcanos.
Second, a substantial part of the remaining debt – about 60 per cent of GDP – would be mutualised across the eurozone so that, whenever the spirit moved them, governments could costlessly default on their bond payments, each one safe in the knowledge that any repudiated debt would immediately become an obligation for the taxpayers in the 18 remaining countries – unless, of course, they defaulted first. This is a variation on the prisoner’s dilemma game, but on steroids. 
Oh, I give up, just go read the whole thing.

Then read his equally good review of Thomas Pikettty, from a year ago, which starts
Reading Thomas Piketty’s Capital in the Twenty-First Century from front to back was a mistake.
Better to read the last hundred pages first, with their recommendations for the confiscation of wealth and marginal income tax rates nearing 100 per cent, and then read the preceding 470 pages to decide whether the flimsy evidence, conjecture and questionable theories the author offers justify such draconian measures....

Wednesday, July 22, 2015

Monetary Testimony

I was invited to testify at the Subcommittee on Monetary Policy and Trade of the House Financial Services Committee on Wednesday. I had only done this once before and it was a very interesting experience.

The proposed bills my fellow panelists (John Taylor, Don Kohn, and Paul Kupiec) and I were testifying on  were the Centennial Monetary Commission Act of 2015 and the Federal Reserve Reform Act of 2015. The bills, transcripts, and all testimony are here.


Needless to say, the Taylor Rule was the star of the show, and proposals to restructure the Fed a close second. I let the experts, John Taylor and Don Kohn, talk about those issues. I emphasized that the Fed is a lot more than pushing interest rates around these days, and worries about a lot more than inflation and unemployment. So the whole rules, discretion, independence, etc. debate should encompass financial regulation and macro-prudential policy.

I also think the view that this is an attack on the Fed is wrong. The Fed should welcome limits on its responsibilities, and a clear and happy arrangement with Congress.

I found the level of discussion from the congresspeople overall remarkably thoughtful. And I found the bills themselves quite interesting. Obviously I don't agree with every word of the bills, but this is all a work in progress but an interesting and important work.

Some surprises in the Federal Reserve Reform Act,
‘‘(1) IN GENERAL.—Before issuing any regulation, the Board of Governors of the Federal Reserve System shall—
  • (A) clearly identify the nature and source of the problem that the proposed regulation is designed to address and assess the significance of that problem;

  • (B) assess whether any new regulation is warranted or, with respect to a proposed regulation that the Board of Governors is required to issue by statute and with respect to which the Board has the authority to exempt certain persons from the application of such regulation, compare—

    • (i) the costs and benefits of the pro- posed regulation; and

    • (ii) the costs and benefits of a regulation under which the Board exempts all persons from the application of the proposed regulation, to the extent the Board is able;...

  • (E) ensure that any proposed regulation is accessible, consistent, written in plain language, and easy to understand and shall measure, and seek to improve, the actual results of regulatory requirements.
So, the Fed is allowed and encouraged to say, The Dodd Frank act requires regulation xyz, but, after analysis, we think the whole rule is silly so we'll pass it for show and then exempt everyone from it.

Plain language is great. I wonder if one can challenge a regulation in court because it was required to be written in plain language?

That last clause is important. The Fed must keep track of regulations and retrospectively evaluate them.

In the big picture, there is a lot of discussion of how to unwind the tangle of regulation. This is a fascinating new (to me) approach.

The Monetary Commission bill is likewise a good read. If this gets off the ground, it will be a fascinating debate.  Two excerpts
(11) The Federal Open Market Committee has engaged in multiple rounds of quantitative easing, providing unprecedented liquidity to financial markets, while committing to holding short-term interest rates low for a seemingly indefinite period, and pursuing a policy of credit allocation by purchasing Federal agency debt and mortgage-backed securities. 
(12) In the wake of the recent extraordinary actions of the Federal Reserve System, Congress—consistent with its constitutional responsibilities and as it has done periodically throughout the history of the United States—has once again renewed its examination of monetary policy.
I was pretty crestfallen when I read that, as it is pretty much exactly what I had to say in my testimony (below). But repeating the point in different language seemed useful.
SEC. 4. DUTIES.

(a) STUDY OF MONETARY POLICY.—The Commission shall—

(1) examine how United States monetary policy since the creation of the Board of Governors of the Federal Reserve System in 1913 has affected the performance of the United States economy in terms of output, employment, prices, and financial stability over time;

(2) evaluate various operational regimes under which the Board of Governors of the Federal Reserve System and the Federal Open Market Committee may conduct monetary policy in terms achieving the maximum sustainable level of output and employment and price stability over the long term, including—

(A) discretion in determining monetary policy without an operational regime;
(B) price level targeting;
(C) inflation rate targeting;
(D) nominal gross domestic product targeting (both level and growth rate);
(E) the use of monetary policy rules; and
(F) the gold standard;

(3) evaluate the use of macro-prudential supervision and regulation as a tool of monetary policy in terms of achieving the maximum sustainable level of output and employment and price stability over the long term;

(4) evaluate the use of the lender-of-last-resort function of the Board of Governors of the Federal Reserve System as a tool of monetary policy in terms of achieving the maximum sustainable level of output and employment and price stability over the long term; and

(5) recommend a course for United States monetary policy going forward, including—

(A) the legislative mandate;
(B) the operational regime;
(C) the securities used in open market operations; and
(D) transparency issues.
This is a pretty sophisticated list. Ok, they didn't add "determinacy in new-Keynesian models," but that's a small shortcoming!  It also includes my call to think of macro-prudential policy in the same breath as interest rates.

The discussion on this one centered on the structure of the committee, with more Republicans than Democrats. One of my proudest moments was to refuse to answer questions about that political makeup. We're economists, you're politicians, don't ask us to opine on political questions. I did say I thought it needed more economists, but everybody laughed.

My verbal remarks and longer written testimony follow. The final thoughts on monetary policy may be provocative enough to keep you going that far.

--------------

Verbal Summary

Chairman Huizenga, Ranking Member Moore, and members of the subcommittee: I thank you for the opportunity to testify.

It is wise for Congress to rethink the fundamental structures under which the Federal Reserve operates. I think the Fed wants guidance as much as you want clarity.

The Federal Reserve enjoys great independence, which is widely viewed as a good thing. However, in our democracy, independence must be paired with limited powers. For example, the Fed cannot and does not print up money and give it out, no matter how stimulative such action could be. That is fiscal policy, which you must authorize and the Treasury execute.

Independent agencies should also, as much as possible, implement laws and rules, or at least traditions and precedents. The more an agency operates with wide discretion and sweeping powers, the more it must be supervised by the imperfect, but accountable, political process.

Your hard task is to rethink the limits, rules, and consequent independence vs. accountabilty of the Federal Reserve.

Conventional monetary policy consists of setting short-term interest rates, in response to, and to stabilize, inflation and unemployment. But the Federal Reserve has taken on a wide range of new powers and responsibilities. Even more are being contemplated. My main point today is to encourage you to look beyond conventional monetary policy, and to consider these newly expanded activities, as this pair of bills begin to do.

Even interest rate policy now goes far beyond inflation and unemployment. For example, should the Fed raise rates to offset perceived “bubbles” in stock, bond, or home prices, or to move the exchange rate? I think not. But I have come to stress the question, not to offer my answers.

A rule implies a list of things that the Fed should not respond to, not try to control, and for which you will not blame the Fed in the event of trouble. A rule based on inflation and unemployment says, implicitly, don’t manipulate stock prices. This may be a useful interpretation for you to emphasize.

But the Fed goes far beyond setting short-term interest rates. To address the extreme events of the financial crisis and deep recession, the Fed has bought long-term Treasuries, mortgage-backed securities, and commercial paper, in order to raise their prices directly. Should the Fed continue to try to directly manipulate asset prices? If so, when, under what circumstances, under what rules, or with what supervision and loss of independence?

Since 2008 the Fed’s regulatory role has expanded enormously.  Two examples:

The Fed invented “stress tests” in the financial crisis. They have now become a ritual. The Fed makes up new scenarios to test banks each time.

The Fed now exercises “enhanced supervision” of the “systemically designated” banks, exchanges, and insurance companies. Dozens of Fed staff live full-time at these institutions, reviewing details of their operation.

These operations follow few rules, they involve great discretion, little reporting or supervision from you, and billions of dollars hang on the results. That is not a good long-run combination.

The Fed now contemplates “macro-prudential” policy, combining regulatory and monetary policy tools and objectives.  The Fed will vary capital ratios, loan to value ratios, or other regulatory tools over time, along with interest rates, if it sees emerging “bubbles,” or “imbalances,” or to “stimulate.”  Well, the Fed’s “bubble” is the home-builder’s boom, and builders will will be calling you when the Fed restricts credit. Do you want the Fed to do this? If so with what rules, what limits, and what accountability?

The Reform Act’s  requirements for stress-test transparency, language simplicity, and for cost-benefit analysis are important steps in managing the regulatory explosion. The authorization in Section 8 for the Federal Reserve to exempt all persons from even  Congressionally mandated regulation, if the Fed finds such regulation unwise, is a landmark. But this must be a tool in your oversight. Filling out more mountains of paper will not mechanically improve the process.

These are just a few examples. The Federal Reserve’s scope and powers have expanded dramatically since the financial crisis. That’s understandable. New powers and policies, adopted in crisis, always involve great experimentation and discretion. Now is the time to look forward, and to consider their limits, rules, mandates, goals, and accountability.

And these bills are important first steps.

-----

Written (slightly edited)

Testimony before the Subcommittee on Monetary Policy and Trade of the Committee on Financial Services of the U.S. House of Representatives
Re the Centennial Monetary Policy Commission Act and The Federal Reserve Reform Act

John H. Cochrane
Hoover Institution, Stanford University
July 22 2015

Chairman Huizenga, Ranking Member Moore, and members of the subcommittee: I thank you for the opportunity to testify on these important pieces of legislation.

I am John Cochrane. I am a Senior Fellow of the Hoover Institution, a nonpartisan research institute at Stanford University. I represent my own views only.

It is wise for Congress and the Federal Reserve to rethink the fundamental structures under which the Fed operates. I think that the Fed wants guidance, and a settled relationship with Congress, as much as you want clarity. I view this legislation as an important first step in that process.

Principles

Two great principles underlie this effort: Independence and rules.

The Federal Reserve enjoys great independence.  This independence is almost universally  viewed as a good thing.

However, in our democracy, independence must be paired with clearly limited powers. And to the extent the Fed is granted or assumes larger powers, it must lose some of its independence.

For example, the Federal Reserve does not and cannot print money and hand it out, or drop money  by helicopters in Milton Friedman’s famous story.  This kind of “stimulus” would be very powerful. In the depths of the recession, Federal Reserve officials surely would have wanted to do it. Many economists advocated “helicopter drops.” But  the power to write checks to voters in our democracy resides with the Treasury department and Congress. And for obvious reasons. Just who gets the checks and how much are deeply political decisions, and only an Administration and Congress which regularly face the wrath of voters can make them.

We also believe in rules, laws, and rule of law. We believe that independent agencies and their officials should, as much as possible, implement laws and rules, or at least traditions and precedents. They should not issue decrees at their discretion. And the more an agency follows rules, the more limited its powers, the more independent it can be.

Your task, and the Fed’s, is to rethink the limits on Federal Reserve powers, to develop rules, to preserve its independence. And where such limits and rules are not possible, to limit that independence and oversee its decisions in the name of citizens, voters, and taxpayers.

Policies

Conventional monetary policy consists of setting short term interest rates, in response to, and with an eye to stabilizing, inflation and unemployment.  Conventional monetary policy was limited to buying and selling short-term Treasuries to affect short-term rates, but will likely consist in the future of simply offering banks higher or lower interest rates on reserves and in loans from the Fed.  You have heard much about rules in this context, and I think the bill before you does a good job of encouraging a fruitful framework for discussion between yourselves and the Federal Reserve.

But that is the tip of the iceberg. In the wake of the financial crisis and deep recession, the Federal Reserve has been given (by the Dodd-Frank act) and has taken on a wide range of new powers and responsibilities. Even more is being hotly discussed, under the label of “macro-prudential” policy. The Fed’s perceived mandates — the central outcomes it should try to control — and its tools — what levers it can pull — have each expanded.

As natural with anything new, this has been a period of great experimentation and thus discretion. But as these experiments merge into regular policy, it is time to bring them in to the usual framework.

My main point today, is to encourage you to look beyond conventional monetary policy, and to consider what rules, mandates, limits, and oversight the Fed will follow in these newly expanded roles, or which of these mandates and tools you wish the Fed to stop pursuing and using.

Interest rate policy now goes beyond inflation and unemployment. The Fed is accused of stoking a housing “bubble” with too low rates in the early 2000s. Now, the big discussion concerns whether the Fed should raise rates to offset a perceived “reach for yield,” high home prices, stock prices and bond prices.

Well, should the Fed be reacting to, or manipulating mortgage rates, exchange rates, and stock, bond, and housing prices? Is it even appropriate for Fed officials to offer opinions on whether stocks are too high or too low?

I think not. There is really no solid economic understanding of any link between the level of short term rates and these other assets. The Fed is as likely to do harm than good, to induce instability in prices from intense speculation about its actions. And manipulating asset prices is an intensely political decision, as the Chinese central bank is finding out, requiring a loss of independence. But I have come to pose the question, not to offer my answers

Perhaps the most important implication of a rule, say linking interest rates to inflation and unemployment, or a mandate, instructing the Fed to stabilize inflation and unemployment, is the long list of things that by implication the Fed should, at least in normal times, not respond, not try to control, and for which you, the Congress, will not hold the Fed responsible. This may be a useful interpretation for you to emphasize.

The Fed’s arsenal of tools now goes far beyond setting overnight rates between banks.

In the recession, the Fed tried to manipulate long-term Treasury rates and mortgage-backed security rates, directly by buying lots of those securities. In the crisis, the Fed also bought commercial paper, to raise those prices. Some central banks buy stocks.

Should the Fed try to manipulate asset prices directly, by buying and selling assets? If so, under what conditions; i.e. with what rules, or with what supervision and loss of independence? Again, I think not. But again, you have to think about it.

Here, the Fed-Treasury separation I praised over fiscal policy has broken a bit. The Treasury’s Office of Debt Management traditionally manages the maturity of government debt in private hands, and thus the Treasury’s exposure to interest rate risk. In the period that the Fed was buying up long-term debt, trying to reduce the amount in public hands, the Treasury was issuing lots of long-term debt, trying to increase it. They each undid the other’s actions. Clearly, some accord is needed over who has responsibility for the maturity structure of the debt.(1)

The Fed is also the prime financial regulator. Since 2008, under the Dodd Frank act, and of its own volition, the Fed’s regulatory role has expanded enormously. “Systemic  stability” is an implicit third or fourth mandate. And the Fed is contemplating “macro-prudential policy,” combining regulatory and expanded monetary policy tools to achieve both macroeconomic and financial goals. What rules and limits will this effort respect?

The Fed now exercises “enhanced supervision” of the “systemically designated” banks, exchanges, and insurance companies. Dozens of Fed staff live full time at these institutions, reviewing details of their operation. This exercise follows few rules, great discretion, and little accountability to you.

The “stress tests” are one example, which this bill begins to address. The Fed made up this procedure in the financial crisis, and it seemed to give confidence in the banks. But this temporary expedient has now become a permanent ritual. The stress tests follow no preset rules. The Fed deliberately tries to surprise the banks with novel tests each time.  The thinking goes, I suppose, that if the banks knew the rules ahead of time, as they know their capital requirements or leverage ratios, they would jigger the books to pass the tests. But the result is a highly discretionary decision by Fed officials, on which billions of dollars and the competitive fortunes of banks rest. That is not a good basis for a permanent policy. I am glad that your bill brings some structure to this enterprise. But not totally glad, as the bill then institutionalizes stress tests and perhaps we should get rid of them instead.

An earlier example is starker. In the robosigning affair, the Federal Reserve joined with the US and states Attorneys General, and used its “safety and soundness” regulatory power to force banks to write down mortgage principal — not on the robosigned homeowners, but on completely unrelated homeowners — and to give money to “nonprofit housing counseling organizations.” Writing down prinicipal — a transfer from bank shareholders to homeowners —  is a fiscal and macroeconomic policy. Whatever its wisdom, it clearly detracts from bank safety and soundness. Though the example is small, I think it provides a clear case of compromised independence, and the use of regulatory powers to effect macroeconomic and fiscal policy interventions. You may or may not approve; you may or may not want the Fed to do such things with complete independence. (2)

The heart of “macroprudential” proposals is the idea that central banks will vary capital ratios, lending standards (loan to value ratios) or other regulatory tools over time, along with interest rates, to stop emerging “bubbles,” or to “stimulate” as need be. The Fed may even try to constrain bank lending in regions of the country, such as those with high housing prices, or to encourage others. Well, your bubble is my boom, and home buyers and builders will be calling you when the Fed restricts credit.  These are political decisions. Do they rise to the writing-checks-to voters standard that an independent agency should not perform? You must decide the limits on this sort of power you wish to impose, and what rules you wish the Fed to follow.

This bill’s requirements for cost benefit analysis are an important step in managing the regulatory explosion. The costs of regulatory compliance and the costs to competitiveness, innovation, and entry into financial services strike me as quite large. But one should not expect the filling out of more mountains of paper to mechanically stop the juggernaut, or more importantly to produce better and clearer regulation, especially when so much rule-making is mandated by Congress itself under the Dodd-Frank act.

The Reform Act’s requirements for stress-test transparency, language simplicity, and for cost-benefit analysis are important steps in managing the regulatory explosion. The authorization in Section 8 for the Federal Reserve to exempt all persons from even Congressionally mandated regulation, if the Fed finds such regulation unwise, is a landmark. But this must be a tool in your oversight. Filling out more mountains of paper will not mechanically improve the process.

The Fed is hotly debating other important changes. Will it maintain a large balance sheet and pay interest on reserves, or revert to the previous rationing of reserves? I prefer the former, for its great financial stability benefits. Will it allow people and non-banks to access interest-paying reserves, the most safe, liquid, and run-free asset imaginable? People will like that, banks will not like being undercut.

The Task

These are all examples of the momentous changes underway in our central bank, as in other central banks around the world. Just how the Fed should approach these issues, which tools and goals it can follow while remaining independent, what rules and legal constraints it can follow in its decisions, what the structures of oversight will be, and how independent it can remain are important issues for you, and the Federal Reserve, to decide.

My main message for you today is to use this bill as a first step in that much broader discussion, and to think beyond conventional monetary policy.

Final thoughts on monetary policy

In part, monetary policy is not, now, obviously broken. The outcomes we desire from monetary policy are, one must admit, about as good as one could hope. Inflation is basically non-existent. Short term rates are as low as we have seen in two generations. The labor market is functioning normally. Economic growth has been steady and bond markets quiet.

Yes, growth is far too slow, not enough people participate or participate fully in the labor force, wages are stagnant, and we face many other economic problems. But these are problems that the monetary policy really can’t do much about.  Congress asked for price stability ([which somehow the Fed interpreted to mean 2% inflation), maximum employment, and low interest rates, and we got them. The Fed has limited powers and limited responsibilities, and the purpose of this bill is to define such limits. Each of us has our own opinions whether the Fed should raise rates or not, but there is no strong professional consensus that the Fed is, right now, doing something dramatically wrong.

This benign outcome is, one must also admit, a bit of a puzzle. When interest rates hit zero, traditional Keynesians predicted a deflationary vortex. When the Fed bought nearly 3 trillion dollars of bonds, creating new money in exchange, traditional monetarists predicted hyperinflation. The Fed’s own forecasts — along with everyone else’s — have been wrong 7 years in a row.  With interest rates stuck at zero, conventional monetary policy has obviously nothing to do with this outcome. We all have our theories - I’ll be glad to fill you in on mine, if you‘d like — but there is no professional consensus on how this remarkably benign state of affairs was reached.

Monetary policy is also much less powerful than most commentators — and most Fed officials — will admit. Money is like oil in the car. Not enough, and the car will stop. But once you have enough oil, adding more does not help the car to go faster. Controlling the car’s speed by slightly starving it of oil is not wise. And more oil will not substitute for clogged fuel injectors.

Like most commentators, I feel that the Fed’s discretionary monetary policy is damaging, as evidenced by financial markets that hang on every sneeze by Fed officials. A more predictable policy may add some stability to financial markets, and enable people who are investing in businesses to do so with more confidence. At least they could be paying more attention to fundamentals and less to parsing Fed officials’ pronouncements. But the combined facts of a benign outcome, at least so far, limited scientific understanding of just how monetary policy works, and limited power of conventional monetary policy, lead me to recommend that this not be the main focus of your efforts.

The massive expansion of Fed responsibilities, the many new tools it is now using, and in particular the temptation to use direct regulatory control to achieve nearly unlimited economic objectives, strike me as the most important topics for a discussion about rules, independence, mandates, and accountability.

----

Footnotes

(1) See  Robin Greenwood, Samuel G. Hanson, Joshua S. Rudolph, and Lawrence Summers, "Government Debt Management at the Zero Lower Bound." Hutchins Center Working Paper, No. 5, September 2014, for details.

(2) My source here is the Federal Reserve website, and I applaud the Fed’s transparency in making these materials public.
http://www.federalreserve.gov/newsevents/press/enforcement/20120209a.htm
http://www.federalreserve.gov/newsevents/press/enforcement/20120213a.htm
http://www.federalreserve.gov/newsevents/press/enforcement/enf20120213a1.pdf


Minimum wage and mechanization


A while ago I opined that higher minimum wages might lead companies like McDonalds to substitute to machines. A former student sends me:
here's a photo I took in the McDonald's on the Champs-Élysées, Paris, of the screens where customers can place their orders and pay. After a short wait, you pick up your burger and fries at the counter.
I did not ask just why he is eating at McDonalds in France!

Monday, July 20, 2015

A Capital Fed Ruling

The Fed just released it's latest missive to the big banks, and the answer is capital, lots more capital.

Three cheers for the Fed.

They are increasingly understanding that no matter how much they try to micromanage asset decisions, it's impossible to regulate away risk from the top. And "liquidity" will vanish the minute it's needed. Joke version -- liquidity standards are like requiring everyone on an airplane to carry a thousand bucks, so they can buy a parachute if the engines blow up. Just who will be buying "liquid" assets in the next crash?

So,  just raise capital, lots more capital, and slowly let the rest fade away.

A minor complaint: The Fed did it right but said it  wrong.
..under the rule, a firm that is identified as a global systemically important bank holding company, or GSIB, will have to hold additional capital...
No, capital is not "held." Capital is issued. Capital is a source of funds, not a use of funds. Capital is not reserves.  Please all, stop using the word "hold" for capital.
"A key purpose of the capital surcharge is to require the firms themselves to bear the costs that their failure would impose on others," Chair Janet L. Yellen said. "In practice, this final rule will confront these firms with a choice: they must either hold substantially more capital, reducing the likelihood that they will fail, or else they must shrink their systemic footprint, reducing the harm that their failure would do to our financial system. Either outcome would enhance financial stability."
Issuing (not holding!) more capital does not make firms "bear costs." Firms never bear costs. They pass costs on to customers, workers, shareholders, or (especially for banks!) the government.  The slight argument for higher "costs" is that equity gets to leverage with less subsidized too-big-to-fail debt; that's not a cost, that's a reduction in subsidy. If (if) the cost of equity capital is high by some MM failure, then equity receives higher returns and borrowers pay higher costs. This is a surprising quote. Ms. Yellen is usually accurate in such matters.

But that's a minor complaint. I'd rather they raise capital and explain it wrong rather than the other way around. And of course, I'd rather they keep going. I'm also a skeptic that big banks are "systemic" and little banks are not, and thus should be allowed to continue with sky high leverage. But we'll get there.

Update:

A reader asks why I'm so persnickety about language. In this case, it's important. I think everyone recognizes that more capital leads to more financial stability. When an equity-financed bank loses money, share prices decline, but there are no failures or freezes. However, if you think capital is "held," and it "costly," then you think that banks shifting to issuing equity or retaining dividends to obtain funds has a cost to the economy, and regulators should require as little capital as possible. If you recognize that capital is issued, does not tie up funds, does not reduce the amount available for lending, then your mind is open to obtaining financial stability with lots and lots more capital.

Saturday, July 18, 2015

The other Smith on Growth

In a recent Bloomberg piece, "Growth Fantasy of Tax Cuts and Small Government" Noah Smith took on my recent blog posts on 4% growth. In the first, I outlined the historical evidence that yes, the US has grown at 4% quite often. In the second, I outlined the standard smorgasbord of free-market policies which I suggested would increase our growth, at lest by inducing a substantial level shift.

Noah's main point is that in my blog posts I did not make any substantive quantitative claims that moving our country from the Republic of Paperwork to Adamsmithia would return the US to the kind of growth we saw in the 60s, late 80s and 90s. True enough.

My surprise in reading Noah is that he provided no alternative numbers and no alternative policies.  Well, if you don't think Free Market Nirvana will have 4% growth, at least for a decade as we remove all the level inefficiencies, how much do you think it will produce, and how solid is that evidence? He rambled a bit about the predictive value of some state scoring efforts, but that's all quite beside the central point -- how much growth could the best imaginable economic policy, at a national level, produce?

More deeply, Noah suggests no alternative policies. He does not claim that more government wage controls,  unions, stricter labor laws (Uber drivers must be employees) heavier and more politicized regulation, cartelizing more industries beyond health and finance, raising taxes to confiscatory levels, larger welfare state, boondoggle public works and so on -- the alternative path in the current policy debate -- will get us back to 4% growth.

So, one must only conclude that Noah -- and others voicing the same it's-not-possible complaint -- believes 4% growth is not possible. 2% or less is the new normal. Sustained growth, of the sort that made us all healthier and wealthier, if not wiser, than our grandparents, is a thing of the past. So all we can do now is fight to carve up a shrinking pie, retreat from an increasingly chaotic world, and pretend that carving up the pie will not shrink it further.

I am surprised at this pessimism, both economic and political. If the absolute best economic policies anyone can imagine -- and, again, Noah offered no alternatives -- cannot return us to 4% growth and sustain that growth, why bother being economists? They do not call us the "dismal science" because we think the current world is close to the best of all possible ones, and all there is to do is haggle over technical amendments to rule 134.532 subparagraph a and hope to squeeze out 0.001% more growth. Usually, the role of economists is to see the great possibilities that every day experience does not reveal. ("Dismal" only refers to the fact that good economics respects budget constraints.)

Similarly, the next US presidential election looks to be an argument over growth vs. redistribution. I doubt that many Americans are so willing to abandon hope so soon.  Even Hilary Clinton's latest speech took the view that reducing inequality would raise growth -- a novel argument (relative to 250 years since Adam Smith) that invites similar theoretical and quantitative evaluation, but at least one that does not give up on growth.

Noah's tired pot-shot has been going on a long time. In 1980 Ronald Reagan announced some pretty radical growth-oriented policies, at least by the standards of the time. (Not much new since Adam Smith, of course.) The standard liberal commentators made the standard objections: voodoo economics, numbers don't add up, it will take generations of unemployment to lower inflation, the debt will explode, and so forth. (Plus, the Soviet Union will be there forever, we might as well get along.)  Reagan offered optimism; won, malaise ended, we won the cold war, and there was an economic boom. One would think the tired argument would have less force by now, or that the pessimists would have found a better one.

Thursday, July 16, 2015

Learning and New Keynesian Models.

John Barrdear at the Bank of England just posted an interesting paper, Towards a New Keynesian theory of the price level. Like Garcia Schmidt and Woodford, it changes the information structure of the standard model to avoid the standard model's problems.
Modifying the standard New-Keynesian model to replace firms' full information and sticky prices with flexible prices and dispersed information, and imposing mild and plausible restrictions on the monetary authority's decision rule, produces the striking results that (i) there exists a unique and globally stable steady-state rate of inflation, despite the possibility of a lower bound on nominal interest rates; and (ii) in the vicinity of steady-state, the price level is determinate (and not just the rate of inflation), despite the central bank targeting inflation. ... The model admits a determinate, stable solution with no role for sunspot shocks when the monetary authority responds by less than one-for-one to changes in expected inflation, including under an interest rate peg....
I haven't read this one yet either. I'm posting for anyone following these issues. Like Garcia Schmidt and Woodford, I also hope that others will read the papers and help to figure out if they really work as advertised.

Wednesday, July 15, 2015

Miles Looks Back

David Miles, retiring from the Monetary Policy Committee of the Bank of England, gave a fascinating speech on the occasion.  (Pdf with graphs here.) David's voice is particularly interesting since he's a real-world central banker, not an ivory-tower academic who can afford to have radical views. Many central bankers seem to evolve to the view that yes, they can push all the levers and run things just right. Not David.

Looking back: lessons from the global financial crisis
..the simplest, and arguably most effective, policy [to avoid financial crises] may well have low long run costs. That policy is to gradually change the funding structure of banks so that they are much better able to deal with shocks by relying less on debt and more on equity...

There are two fundamental reasons why having financial intermediaries fund their acquisition of assets with significant amounts of equity makes sense. First, it directly addresses the problems of improving incentives and preventing even limited falls in expected asset values triggering big rises in perceived risks of insolvency. Consider why the very large fall in asset values after the dot.com bubble burst did not have such devastating effects on the US economy. It was because all that frenzied activity was largely financed by equity and not debt. People who had funded much of the dot.com bubble lost money, but this did not trigger a whole series of insolvencies in the financial sector and disrupt the flow of credit to the wider economy.

Second, the long run cost of even rather big increases in the amount of equity funding of financial intermediaries is plausibly quite small. Substantial changes in the use of equity funding have already taken place since the crisis – and on some metrics required capital is as much as ten-times greater than pre 20087. And yet there is little evidence that the overall cost of bank funding has increased substantially. The paths of bank lending rates, both in absolute terms and relative to Bank of England Rates, have tended to fall (charts 2 and 3). And direct measures of the cost of bank funding have been on a steady declining path as capital ratios have risen (chart 4).
But won't the cost of capital rise and thus the cost of loans rise?
Simple finance theory suggests why, starting from very low levels of equity (high debt leverage), the impact of large proportionate changes in the use of equity on the overall cost of funds is likely to be small.

Consider the impact of doubling capital – or halving leverage – using the simplest possible back of the envelope calculation of a bank’s weighted average cost of funds. Suppose we start with leverage of 40 and cut it to 20 (that is with equity initially of 2.5% of total assets rising to 5%). Let’s imagine that the cost of debt financing is 5% and the required return on equity (its cost) at the original level of capital is 15%. First, if we assume that these costs will not change (a pretty big and unrealistic ‘if’ for a dramatic change in leverage), this will lead to total cost of financing increasing from 5.25% (0.975*5%+0.025*15%) to 5.5% (0.95*5%+0.05*15%), a rise of only 0.25pp. 25 basis points is what people used to think of as one typical MPC rate change at its monthly meetings.

And this is an extreme case in which the costs of equity and debt do not change. Theory suggests they should change so as to reflect the shift in riskiness as equity rises – debt becomes safer and equity returns less variable. At the extreme (and if the conditions for the famous Modigliani-Miller (MM) theory hold) there would be no change in the weighted cost of funds.
I hadn't thought of this. Even if MM is completely false for banks, the actual rise in costs of capital is small.
A combination of the limited liability of shareholders and deposit insurance almost certainly makes MM not hold for banks. But many of these factors may mean that while MM does not hold, the private cost of banks using more equity is not a true social cost.
In simpler terms, equity financed banks may face a higher cost of funds, because our governments subsidize debt. That fact does not mean that society as a whole as a higher cost of borrowing through equity-financed banks.

David goes on to an interesting question: Let us compare equity financed banking to the current rage, using monetary policy to identify and prick asset price "bubbles."
Might it then be that a better way to control risk taking and financial fragility is to use ...changes in the general level of interest rates ...

My own view is that skewing monetary policy towards trying to stop financial instability problems is, in general, unlikely to be the right answer. Yet many seem to think that the crash showed that having narrower aims of monetary policy – centred around an inflation target – was somehow proved wrong. I think that view fails to look at the deep reasons for the crash, which to my mind were the existence of excess leverage (too little equity funding) in banks. Excess leverage is not something effectively countered by a general rise in the level of interest rates. Higher interest rates will tend to increase required returns on both debt and equity and so it is not at all clear they encourage the use of relatively more equity. Capital requirements – a macro prudential tool – get to the heart of the problem.
I'm less in love with the "macro prudential" agenda, but in this case I cheer.

David makes another interesting point:
..bankers are right to say: For them raising equity is costly; and imposing a higher capital requirement will reduce aggregate lending.

Both statements are correct. But both miss the point. There may be too much lending in the unregulated state. Equity may look costly to banks but it has an overall beneficial side effect in better aligning the interests of shareholders with those of other claimants on the bank. To put the point another way: there is an inherent tendency in banking markets for there to be excessive risk taking. 
This is a nice point, which had not occurred to me. If the cost of debt financing rises, borrowers may choose equity financing instead. It's not obvious that the total amount of investment declines, or that it declines in a socially inefficient way. There is such a thing as too much debt!

Lessons about Monetary Policy: QE, ZLB and deflation
The global recession led many central banks to lower their policy rates to near zero. With the exception of in Japan, this was pretty much unchartered territory for monetary policymakers...

...the predictions from mainstream theoretical macroeconomic models for what would come next were not comforting... [For example] Eggertsson and Woodford (2003, EW) had analysed what happens at such low levels of policy rates and the likely effectiveness of asset purchases. They suggested that on hitting the lower bound an economy could suffer a deep deflation and recession and that asset purchases were not likely to help much. Their analysis suggested that the effective way to avoid deflation in such circumstances would be to commit to future inflation overshooting the target.

I found these predictions somewhat unrealistic, ...

I also doubt that there is a deflation cliff at the ELB. The evidence for thinking that deflation risks become great at the ELB is actually quite weak. There were no dramatic deflations among OECD economies (except for Ireland, which saw an exceptionally sharp fall in economic activity), and there was no clear difference in the change in inflation rates between countries that were constrained by the ELB and those that were not. Inflation fell in most OECD countries in 2009, but only a few experienced outright deflation.

... Neither actual nor expected inflation displayed the deflation cliff at the effective lower bound.
He's not quite "neo-Fisherian." But clearly the prediction of a deflation "spiral" or "vortex" at the zero bound troubled him at the start -- as it should have -- and no longer sits well.

I disagree mildly on the effectiveness of quantitative easing. David seems to think it worked. And his story for the absence of deflation seems to be in part that QE stopped it. But, he acknowledges Ben Bernanke's famous quote, "the problem with QE is that it works in practice, but it doesn’t work in theory." I'm reluctant to really believe anything works until we have at least a vaguely plausible understanding of how it works. Doctors believed in bleeding for a long time. One can see though how practical experience and academic reserve might differ here.

Behavioral Public Choice

In a number of blog posts, (here ) I've complained about the lack of behavioral public choice theory, and highlighted some efforts in that direction.

Much behavioral economics documents that people do stupid things, and then jumps to the conclusion that parternalistic government can do things for us better. But wait, those government functionaries are also human, also behavioral, and placed in group and social settings that psychology as well as economics warns us are particularly prone to bad outcomes.

Marginal revolution highlights an interesting new paper that breaks in to this field, Behavioral public choice: The behavioral paradox of government policy by Ted Gayer and W. Kip Viscusi. A quote:
In this article we examine a wide range of behavioral failures, such as those linked to misperception of risks, unwarranted aversion to risk ambiguity, inordinate aversion to losses, and inconsistencies in the tradeoffs reflected in individual decisions. Although such shortcomings have been documented in the behavioral literature, they are also reflected in government policies, both because policymakers are also human and because public pressures incorporate these biases. The result is that government policies often institutionalize rather than overcome behavioral anomalies.
I haven't read it, but it seems interesting, and the field seems wide open. The defense of freedom never was that freedom is perfect, merely that government control is worse.

I am interested that behavioral economics seems so focused on mistakes of individual decision making, as nicely summarized in the quote. In fact the most obvious thing about humans is that we are social animals, not that we are poor individual decision-makers. I would think that behavioralists would be bringing social psychology more than individual decision making to economics. But maybe this just reveals how little I know about either.

Tuesday, July 14, 2015

Garcia Schmidt and Woodford on neo-Fisherian economcs

Mariana Garcia Schmidt and Mike Woodford are lighting up the internet with a presentation on neo-Fisherian economics -- the proposition that, when we are satiated in money as at the zero bound or with interest on reserves, raising interest rates raises inflation. Noah Smith, Marginal Revolution, Brad DeLong, and indirectly at Mark Thoma's econbrowser.

This is a particularly important voice, as it seemed to me that standard New-Keynesian models produce the new-Fisherian result. i = r + Epi is a steady state in all models. In old-Keynesian models, it was an unstable steady state, so an interest rate peg leads to explosive inflation or deflation. But in new-Keynesian models, an interest rate peg is the stable/indeterminate case. There are too many equilibria, but if you raise interest rates, inflation always ends up rising to meet the higher interest rate.

What I can glean from the slides is that Garcia Schmidt and Woodford agree: Yes, this is what happens in rational expectations or perfect foresight versions of the new-Keynesian model. But if you add learning mechanisms, it goes away.

My first reaction is relief -- if Woodford says it is a prediction of the standard perfect foresight / rational expectations version, that means I didn't screw up somewhere. And if one has to resort to learning and non-rational expectations to get rid of a result, the battle is half won.

But that's only preliminary relief. Schmidt and Woodford promise a paper soon, which will undoubtedly be well crafted and challenging.

For more on the issue, here is a a previous blog post. Section 3.1 ff of "Monetary policy with interest on reserves" has a full new Keynesian model with the Fisherian result. And a wry prediction: the Fed will raise rates to head off inflation, that will cause the inflation, then the Fed will congratulate itself on having headed off the inflation.  I also suspect that models with restricted liquidity (no interest on reserves) do give a temporary decline in inflation, but without that liquidity we now will get full Fisherian results. But that's just a conjecture so far.  My last foray into learning in new-Keynesian models, which didn't end well.

Why post now? Garcia Schmidt and Woodford clearly will have a thoughtful and sophisticated paper, on what I think is a deep and important point. I hope to encourage others to read and help to digest the paper.


Monday, July 13, 2015

Greece again

I read this morning's news of a deal -- we'll see how long it lasts -- with interest. Here's a video exchange with Rick Santelli on the subject on CNBC (I can't seem to get the embed to work, so you have to click the link.)

My main thought: what about the banks? The minute Greece reopens its banks, it's a fair bet that every person in Greece will immediately head to the bank and get every cent out. The banks' assets are largely Greek loans, which many aren't paying -- why pay a mortgage to a bank that's already closed and will probably be out of business soon anyway -- and Greek government debt; mostly Treasury bills that only roll over because banks hold them. They can't sell either, so the banks will instantly be out of cash.

The deal reported in today's papers really barely mentions that problem. But that is the problem of the hour.


Greece is basically off the euro now. Being in the euro does not mean that restaurants take euros. Being in the eurozone means that banks use euros, that you can take euros out and arrange international transfers using euros.

The economy is paralyzed. The main thing a deal needs is a way to reopen banks in a matter of days. Privatization and labor laws are fine, but that generates growth a year from now at best. And raising taxes? They must be kidding.

I've read with interest some proposals that the EU take over the banks. The EU takes on the bad assets, gives or sells the rest to large international banks, and these operate under EU rules -- not Greek regulators; they can't buy any Greek debt, and Greece can't tax them.  It's expensive, yes, but it's basically as shoot-the-hostage approach. A functioning economy would help Greek finances. And then the EU can let the Greek government default if it wishes.  Saving the banks might be a lot cheaper than saving the Greek government and the banks.

There are two original sins in the euro, neither having to do with fiscal union. The first is that each country has its own banks, and each government uses its banks as piggybanks to stuff with government debt. European bank regulators and Basel regulations treat sovereign debt as risk free. Then, if the government defaults, the whole banking system is dragged down with it. The second is the endlessly repeated fallacy that government default means the country must change the units of its currency. If Chicago defaults on its debts, nobody thinks it must introduce a new currency, or that Chicago's banks will fail.

A currency union needs a banking union, or at least banks that are not stuffed with government debt. A currency union needs to let sovereigns default without changing currencies or paralyzing the banking and payments system. A currency union needs a banking union.

Friday, July 10, 2015

Uber for Health Care



The Booth School's Capital Ideas made this really nice (well, I think so) video out of my blog posts on Uber and health care. Together we condensed the Uber for healthcare posts into a better essay, here, with link to the video.

We need supply competition, not just people paying their own money, to get innovative and lower cost health care. People paid their own money for taxis, but hailing a cab to the airport on a rainy friday afternoon was still no picnic. It took supply competition, in the form of Uber, to give us better service and lower costs.

The mergers of health insurance companies under the protections and regulatory fixed costs of Obamacare are, obviously, a step in the wrong direction. Three big, politically connected, health insurers, 6 big, politically connected banks, and you see where our economy is going.

Thursday, July 9, 2015

What next?

Source: Deutsche Bank Research 

The lovely flow chart comes from Deutsche Bank Research

It emphasizes the central point I am taking from all this -- how Greek banks are hostages in this negotiation. With banks closed and capital controls, the Greek economy can't function.

Monday, July 6, 2015

Can Greece Leave?

Is Grexit even possible?

It strikes me that the best Greece can do with a Drachma is to create a two-currency system, sort of like Cuba or Venezuela, or at best Argentina; countries whose politics the Greek government seems to admire, and whose economies its may soon resemble.

If the government brings back the Drachma  as a way to pay pensions, government salaries, and bank accounts, Euros will still circulate in Greece.

18% of Greek GDP is tourism. That number may be understated -- I don't know if it includes tourist spending at restaurants, stores, transport, and other places that mix tourists and locals. Tourists will spend Euros, not Drachmas. So hotels, gas stations, restaurants, grocery stores, clothes stores, airlines, car rentals, etc. will likely still gladly take euros and euro credit cards, and from locals as well as tourists.

I looked up Greek GDP at the OECD.  Of 157 billion euros value added, agriculture is a tiny 6, industry 18, of which manufacturing 13.  However, services are 130, 80% of the total.  Here, the big items are  "distribution, trade, repairs, transportation accommodation and food" 41, real estate activities 34, and public administration 39.   Exports and imports are each about 60 out of 180 billion euros.

Now, anyone exporting -- 60 out of 157 -- has access to euros and likely invoice in euros thank you very much. Anyone importing will need to get their hands on those euros.

(Interestingly most exports are services, most imports are goods. I can't get a handle on what services Greece exports, and thus whether devaluation would make much difference.)

The 41 billion of "distribution, trade, repairs, transportation accommodation and food" services will surely take euros as above, to convenience the tourist trade.  I can't fathom how 34 billion euros are real estate services -- not construction -- so I can't guess really if that is euros or Drachmas.  The 39 billion of public administration gets Drachmas.

So, the Drachmaized Greece that I see is not the cleanly devalued newly competitive powerhouse that some on the left seem to envision.  Instead I see a two-currency economy. Pensioners and government workers and anyone unlucky enough to still have a Greek bank account get Drachmas. Hotel owners, restaurant owners, and exporters get euros, above or under the table.

In this scenario, I can't imagine a freely convertible currency. Will the government really give 100 Drachmas to someone who used to get 100 Euros, with an exchange rate below half? The point of not cutting salaries was political. So we are almost sure to see capital controls, exchange controls, and a fictional overvalued exchange rate, so Greece can pretend to pay pensioners and government workers.

It's not a pretty thought. Sticking with the euro seems a far better option, just like sticking with the meter.


Calomiris and sticky prices

Charles Calomiris has a very interesting Forbes oped on Greece, with a much deeper insight.
My proposal begins with government action to write down the value of all euro-denominated contracts enforced within Greece. This “redenomination” would make all existing contracts – wages, pensions, deposits, and loans – legally worth only, say, 70% of their current nominal value. This policy would kill several birds with one stone. It would significantly reduce pensions, relieving fiscal pressure and satisfying troika demands for fiscal sustainability. It would do so in a way that would also mitigate the purchasing power consequences for pensioners, because an across-the-board redenomination would lower prices throughout the economy, making the reduction in nominal pensions more bearable. By applying redenomination to deposits and loans, banks’ health would be revived – their loans would now be payable and therefore more valuable, and their net worth would consequently rise. The 30% wage reduction would further reduce fiscal problems and make Greek producers competitive, and operate as an “internal devaluation” to raise demand for Greek products and tourism. Most importantly, this internal devaluation – by solving the problems of fiscal deficits, non-competitiveness and bank insolvency – would inspire confidence in Athens’ ability to stay within the eurozone, which should bring deposits back into the banking system to fuel a rebirth of lending.
I think this is about half right, but a very good idea lies in here.

"an across-the-board redenomination would lower prices throughout the economy"? Not necessarily. Why would any store lower prices just because it gets to lower wages and rent? Prices are not a "contract."

Thus, the redenomination should probably come with a (say) one week price control. Every price must be lowered 30% over what it was the previous day, for a week,  Just long enough for each store to see that its competitors and suppliers has also really lowered prices.  Then stores can do what they want.

The deeper issue here is just what is the price and wage stickiness that so infects macroeconomic thinking. Why is "internal devaluation" by price and wage adjustment so much harder than "external devaluation" by exchange rate adjustment? Our formal models have costs of changing prices. Yet the actual costs of changing prices are tiny.

I think a "coordination problem" is more likely. The baker doesn't want to lower his price because he still pays the same price for wheat and yeast; the farmer doesn't want to lower his price because he pays the same price for fuel, and so forth. This web of prices is of course thousands of times more complex than that story. That's why it takes so long for everyone to agree on lower prices together.

At times, however, prices and wages do change, overnight, with no cost at all. When countries join the euro, every store changes price -- and the symbol next to it -- overnight. That fact alone should tell us that menu costs, though a nice formalism, are not the real microeconomic foundation of price and wage stickiness. And there is a potential role for a government to coordinate price changes.

What Charles is proposing, then, is exactly the same sort of overnight price and wage change that happened on admission to the euro. If you think prices and wages are "overvalued" in Greece, and a "devaluation" is all it takes for Thessaloniki to start exporting Porsches to Stuttgart, then an overnight, coordinated, price and wage change is a very nice alternative policy that we might start taking more seriously.

This is a bit of a "thesis topic" suggestion. I think we need a model of price stickiness as a coordination failure that is as simple and tractable as the standard, but false, Calvo fairy or menu cost models. Coordination failure models might also result in the sort of backward-looking stickiness that Phillips curves in the data seem to show.

Why just a week? Well, the macroeconomic presumption here is that Greece is suffering some sort of "imbalance" or "overvaluation" or "sticky wage." If that's right, one week at the right prices and wages should stick. Each individual store or person would then be reluctant to raise prices without the others going along. If prices jump right back up again after a week, however, without the help of government coordination, then we weren't so imbalanced to begin with, and the problem is really structural not monetary.

I rather suspect that tourist prices are set by competition with Sicily, not local wage stickiness, but it would be interesting to see. Prices of imported goods will also likely jump right back up. Fine.

Charles doesn't mention prices, but he does mention debts. This is a lot harder, as a debt "redenomination" is not just a method to solve a coordination problem and lower all prices and wages relative to German ones going forward, it is a huge transfer of wealth and a technical default.

If you run a coffee shop and charged 2 euros for a cappuccino yesterday, having all the coffee shops change to 1.5 euros overnight (for a week) is one thing. But changing the mortgage payment is another. One is a price. The other is a default.

Charles sneaks off into the economic passive voice here  "By applying redenomination.." which is always a sign of trouble ahead.  Most lenders, especially international ones, will go straight to court on that one.

I also do not follow how "applying redenomination to deposits and loans, banks’ health would be revived – their loans would now be payable and therefore more valuable, and their net worth would consequently rise." Before redenomination: Assets: 50 euros mortgages, 50 euros greek government bonds. Liabilities: 99 euros deposits, 1 euro equity. After redenomination: all numbers cut by 1/3. How is the bank any healthier? All ratios (capital, leverage) are the same.

So I think the proposal has the right spirit but a slightly wrong focus.

Charles continues
Although redenomination would accomplish a great deal, by itself it is not enough. As simple economic theory (formally known as the the Balassa-Samuelson Theorem) tells us Greece will only be a viable long-term member of the eurozone if it can match the long-term productivity growth of Germany and other members. To do so requires it to undertake major reforms to labor laws and competition policies, and to wage a credible war on corruption. 
I disagree pretty strongly here. If "eurozone" means a free trade agreement and a common currency, that can survive just fine with vastly different productivity levels (it already does) and consequently different productivity growth rates. Productivity across locations in the US varies enormously. Ricardo and absolute vs. comparative advantage was all about free trade under the gold standard (common currency) between countries of different "competitiveness" or productivity levels. Perhaps he means eurozone as an area that promises fiscal transfers to produce an equal standard of living everywhere. If so, good luck.

But that Greece's only hope to avoid becoming the next Venezuela is  "major reforms to labor laws and competition policies, and to wage a credible war on corruption" is spot on. In or out of the euro, in our out of the EU, in the end money and trade freedom are small parts of economic growth.

China crash?

Meanwhile, on the other side of the world, China is doing everything in the textbook to ignite a "bubble."

I dislike that usually undefined term, which carries a lot of normative baggage. But there are a set of steps that governments often take unwittingly and are later criticized for. China's doing them on purpose. And these steps quite often precede large market declines.

Short sales ban: Financial Times: "opened a probe into market manipulation"  ... "The investigation is likely to focus on short selling."  The usual witch hunt, with Chinese characteristics. Owen Lamont has a splendid paper on what often follows short-sales bans. The weekend before TARP and Lehman, the US instituted a short-sales ban on bank stocks, just in case there was someone out there who did not know banks were in trouble and they should sell now. Europe instituted a CDS selling ban in the first PIGS crisis...

Lending to encourage highly leveraged speculation: Wall Street Journal: "Under the planned move, China’s central bank will indirectly help investors borrow to buy shares in a market that had already seen a rapid buildup in debt from so-called margin financing." Procyclical credit supply is named by just about every account of a "bubble" followed by a crash.

Prices depend on supply and demand. As well as increasing demand, limit supply: "A halt to new stock listings."

And more. Quartz offers "A complete list of the Chinese government’s stock-market stimulus (that we know about)" including  "People’s Bank of China will “provide liquidity assistance” to China Securities Finance Corp., a company owned by the stock regulator. The company will use the money to lend to brokerages, which could then make loans to investors to buy stocks."

This scenario often ends badly.

The only thing I can think of that can actually stop a crash is for the central bank to directly print money to buy stocks. And not just a little bit. A pre-announced and limited quantity won't work. The US QE took billions to alter bond prices a few basis points at most. One has to commit to a price floor and a "do what it takes" amount of money, no matter how large or inflationary. I don't know of it ever being tried. It will be interesting to see if China goes that far. They could hide the fact with extensive bailouts of people "borrowing" to buy stocks, or otherwise cover losses or promise to cover losses.

Of course, the right strategy is to leave it alone. The whole point of stocks is that they go down on occasion, without runs, without defaults, and without financial distress. Unless the people and institutions holding them are highly leveraged. Didn't we just learn this lesson?



Saturday, July 4, 2015

Greece vs Puerto Rico and what's "systemic."

How is a Greek default different from a Puerto Rican default?

Answer: because Puerto Rico doesn't have its own banking system. It can't shut down banks. Banks in Puerto Rico are not loaded up on Puerto Rico debt, so depositors are not in danger if the state government defaults.

Puerto Rico, like Greece, uses a common currency. But there is no question of PRexit, that people wake up one morning and their dollar bank accounts are suddenly PR Peso bank accounts. So they have no reason to run and get cash out.

Banks in New York are also not loaded up on Puerto Rico debt. US bank regulators haven't said that those banks can pretend Puerto Rico debt is risk free.

If a Puerto Rican bank fails, any large US bank can quickly take it over and keep it running.

A Puerto Rican government default will be a mess. Just like the default of a large business in Puerto Rico. But it will not mean a bank run, crisis, and economic paralysis.

So here is a big lesson of the Greek debacle: In a currency union, sovereign debt must be able to default, without shutting down the banks, just as corporations default. Banks must not be loaded up on their country's sovereign debt. Bank regulation must treat sovereign default just like corporate default. It can happen, and banks must diversified and capitalized to survive it.  Banks must be free to operate across borders.  A common currency needs a firm commitment that it will not be abandoned.

In financial regulation, the big debate rages over what is "systemic,"  with the latest absurd idea to extend that designation to equity asset managers. (More later.) All that discussion starts with statements that  sovereign debt or anything backed by sovereign debt or sovereign guarantees is safe and per se not "systemic." Sovereign debt still counts as risk free in almost all banking regulation.

Greece should reinforce the lesson: Sovereign debt is a prime source of "systemic" danger. That is especially true of small governments in a currency union. A government is just a highly leveraged financial institution and insurance company.

Wrong answers:

- Fiscal union. The US is not necessarily going to bail out Puerto Rico. Or Illinois. Or their creditors. People keep saying a currency union needs fiscal union, but it is not so.

- National deposit insurance is really not central either. The banks operating in Puerto Rico are not in danger, so they don't need deposit insurance protection.

Update: A colleague pointed me to this excellent article on banks holding their own sovereign debt by Lucrezia Reichlin and Luis Garicano.