Portfolios for long-term investors

Portfolios for long-term investors is an essay that extends a keynote talk I will give Thursday Jan 21 at the NBER "New Developments in Long-Term Asset Management" zoom conference. The link takes you to my webpage with pdf of the essay and the slides for the talk. I'll blog the next draft of the essay, as I want to do it once and I'm sure I'll get lots of comments. 

The conference program is here. You can listen to the conference on YouTube here.  I'm on Thursday 12:30 ET, but many of the other papers look a lot more interesting than mine! 

Abstract: 

How should long-term investors form portfolios in our time-varying, multifactor and friction-filled world? Two conceptual frameworks may help: looking directly at the stream of payments that a portfolio and payout policy can produce, and including a general equilibrium view of the markets’ economic purpose, and the nature of investors’ differences. These perspectives can rationalize some of investors’ behaviors, suggest substantial revisions to standard portfolio theory, and help us to apply portfolio theory in a way that is practically useful for investors. 

Low Interest Rates and Government Debt

This is a talk I gave for IGIER at Bocconi (zoom, sadly) Jan 11 2021. Olivier Blanchard also gave a talk and a good discussion followed. Yes, some content is recycled, but on an important topic one must go back to refine and rethink ideas. This post has mathjax equations and graphs. If you don't see them, come back to the blog or read the pdf version. Update: Video of the presentations. 

Low Interest Rates and Government Debt
John H. Cochrane
Hoover Institution
Prepared for the IGIER policy seminar, January 11 2021

1. Why are real interest rates so low? (And thus, when and how will that change?)

Figure 1. 10 year US treasury rate and core CPI.

As Figure 1 shows, real and nominal interest rates have been on a steady downward trend since 1980. The size, steadiness and durability of that trend mean that we must look for large basic economic forces. “Savings gluts,” foreign exchange reserves, quantitative easing, lower bounds, forward guidance bond market frictions and so forth may be important icing on the cake, but they are not the cake. They cannot account for such a long-lasting steady trend.

The most basic economics states that the real interest rate equals people’s rate of impatience, plus growth times a coefficient usually thought to be between one and two. The interest rate is also equal to the marginal product of capital. In equations*, \[r = \delta + \gamma g \].  

Figure 2. Real potential GDP growth. 

Figure 2 presents the growth of potential GDP, as one easy way to look at long run growth trends. Potential GDP grew 4.5% in the 1960s, 3% in the 1970s, had a spurt in the late 1990s, and then settled down to less than 2% now. This slowdown in long-term growth is the great and unheralded economic disaster of our time. But that’s for another day.

The most natural explanation for the decline in real interest rates, then, is that growth has declined. A coefficient greater than one brings interest rates down faster than growth rates, opening the question that the interest rate r might even be below the growth rate g.

Video, talks, podcasts update

I have been remiss in posting links to videos, talks, and podcasts, for those of you who enjoy them.  Perhaps you have a long boring drive this weekend and NPR is driving you nuts. 

Canadian non-QE

Friday at Hoover we will have a series of events reexamining the lessons of the financial crisis and recession. (There is a public event here, in case you're interested. Presenters include George Schultz, John Taylor, Niall Ferguson, Caroline Hoxby and Darrell Duffie.)

In preparing a presentation on QE, I stumbled across the following fact.

1) Canada did not do QE, quantitative easing. (Kjell Nyborg showed us this fact in a very interesting finance seminar on a different topic -- European banks are borrowing from the ECB using rotten collateral)

2) Use vs. Canadian 10 year government bond rates were nearly identical in the QE period.

Conventional wisdom states that US QE lowered interest rates by 1%. I am a skeptic, and this graph reinforces my skepticism.

One might say that the US exports its monetary policy effects to Canada. But the Canadian Dollar is its own currency, so exchange rates, not interest rates should soak up that difference.

One can complain in many ways, but this seems to me to add to the view that QE didn't even change interest rates.

Financial reform video

Capital, more capital. I did a video interview for the Chicago Booth Review, summarizing a few talks I'm giving this fall. At some point I'll put the talks together in useful form for the blog. In the meantime, the Booth team did a nice job of cutting and splicing to make me sound coherent. 

Nobel Symposium on Money and Banking Day 2

Day 2 of the Nobel Symposium on Money and Banking focused on monetary policy. (My last post covered Day 1 on banking.)

Bernanke

Sadly Ben Bernanke's video and slides are not up on the website. Ben showed some very interesting evidence that the crisis was an unpredictable run, rather than the usual story about predictable defaults resulting from too much credit. Things really did get suddenly a lot worse in September and October 2008. Yes, it's easy to say this is defense against the charge that he should have done more ahead of time. But evidence is evidence, and I find it quite plausible that the relatively small losses in subprime need not have caused such a massive crisis and recession absent a run. Ben says the material is part of a paper he will release soon, so look for it. One can understand that Bernanke is careful about releasing less than perfect drafts of papers and videos.

History

Barry Eichengreen gave a scholarly account of why history matters, especially the great depression, and we should pay more attention to it. (Paper, video.) He aimed squarely at typical economists whose knowledge stopped at Friedman and Schwartz, or perhaps Ben Bernanke's famous non-monetary channels paper, in which bank failures propagated the depression. He emphasized the role of the gold standard and international cooperation or non-cooperation, and warned against facile comparisons of the gold standard experience to today's events and the euro in particular.

Randy Kroszner has a great set of slides and an engaging presentation. He also started on parallels with the great depression, and told well the story of the US default on gold clauses. He closed with a warning about fighting the last war -- particularly apt given the exclusive focus of most of this conference on the events of 2008 -- and on how to start a crisis. In his view when Bank of England Gov Mervyn King said: “We will support Northern Rock." People hear "Northern Rock's in trouble? Run!" Likewise, in my view, speeches by President Bush and Treasury Secretary Paulson did a lot to spark the run in the US.

DSGE

A highlight for me, was the session on DSGE models.

Marty Eichenbaum (video, slides, subsequent paper) gave a nice review of the current status of new Keynesian DSGE models, and how they are developing in reaction to the financial crisis and recession, and the zero bound episode.

Harald Uhlig

Critiques, or more precisely lists of outstanding puzzles and challenges, are often more memorable and novel than positive summaries, and Harald Uhlig delivered a clear and memorable one. (Video, Slides)

Asset prices are a longstanding problem in DSGE models. In typical linearized form, the quantity dynamics are governed by intertemporal substitution, and the asset prices by risk aversion, and neither has much influence on the other. (I learned this from Tom Tallarini.) Rather obviously, our recent recession was all about risk aversion -- people stopped consuming and investing, and tried to move from private to government bonds because they were scared to death, not a sudden attack of thriftiness. There is a lot of current work going on to try to repair this deficiency, but it still lives in the land of extensions of the model rather than the mainstream. Harald also points out a frequently ignored implication of Epstein-Zin utility, the utility index reflects all consumption and anything that enters utility

Financial frictions are blossoming in DSGE models, in two forms: First, HANK or "heterogenous agent" models, which add things like borrowing constraints and uninsurable risks so that the distribution of income matters, and in an eternal quest to make the models work more like static ISLM. Second, in response to the financial crisis (see first day!) stylized models of banking and intermediary finance are showing up. I'm still a little puzzled that the more standard time-varying risk aversion part of macro-finance got ignored, (a plea here) but that is indeed what's going on.

The conundrum, here as elsewhere in DSGE, is that the more people play with the models, the further they get from their founding philosophy: macro models that do talk about monetary policy, (now) financial crises, but that obey the Lucas rules: Optimization, budget constraints, markets, or, more deeply, structures that have some hope of being policy invariant and therefore predictions that will survive the Lucas critique. Already, many ingredients such as Calvo pricing are convenient parables, but questionably realistic as policy-invariant.

Harald points out that since most of the frictions are imposed in a rather ad-hoc manner, neither will they be policy-invariant. This is a deeper and more realistic point than commonly realized. Every time market participants hit a "friction," they tend to innovate a way around that friction so it doesn't hurt them next time. Regulation Q on interest rates was once a "friction," and then the money market fund was invented. The result is too often "chicken papers:"

The understandable trouble is, if you try to microfound every single friction from Deep Theory -- just why it is that credit card companies put a limit on how much you can borrow, in terms of asymmetric information, moral hazard, and so forth -- the audience will be asleep long before you get to the data. Also, as we saw in day 1, there is (to put it charitably) a lot of uncertainty in just how contract or banking theory maps to actual frictions. I think we're stuck with ad-hoc frictions, if you want to go that route.

Harald's next point is, I think, his most devastating, as it describes a huge hole in current models that is not (unlike the last two) a point of immense current research effort. The Phillips curve and inflation are the central point of the New Keynesian DSGE model -- and a disaster. 

The Phillips curve is central. The point of the model is for monetary policy to have output effects. Money itself has (rightly) disappeared in the model, so the only channel for monetary policy to work is via the Phillips curve. Interest rates change inflation, and inflation causes output changes. No surprise, it is very hard for that model to produce anything like the last recession out of small changes in inflation. (I have to agree here with the premise of the financial frictions view -- if you want your model to produce the last recession, other than by one huge shock, the model needs something like a financial crisis.)

The Phillips curve in the data is well known

Less well known, but worth lots of attention, is how the now standard DSGE models completely fail to capture inflation. Harald's slide:

The point of the slide, in simpler form: The standard Phillips curve is

inflation today = beta x expected inflation next year + kappa x output gap  + shock

Essentially all inflation is accounted for by the shock. The model is basically silent about the source of inflation. Looking at the model as a whole, not just one equation, Neither monetary policy shocks nor changes in rules accounts for any significant amount of inflation. 

I made a similar graph recently. Use the standard three equation model

Now, use actual data on output y, inflation pi, and interest rate i, to back out the shocks v. Turn off the monetary policy shock vi = 0. Solve the model and plot the data -- what would have happened if the Fed had exactly followed the Taylor rule? 

Answer: Inflation and output would have been virtually the same. The inflation of the 1970s and its conquest in the 1980s had nothing to do with monetary policy mistakes. It is entirely the fault, and then fortunate consequence, of "marginal cost" shocks that come from out of the model. This is a pretty uncomfortable prediction of a model designed to be about monetary policy! Or, as Harald put it

• Data: no Phillips-Curve tradeoff.
• QDSGE: don’t account for inflation with monetary policy shocks.
• The NK / Phillips-Curve-based NK QDSGE models may thus provide a poor guide for monetary policy.

Wait, you ask, what about Marty Eichenbaum's pretty graphs, such as this one, showing the effects of a monetary policy shock?

The answer: After a lot of work, the effects of a monetary policy shock look (at last) about like what Milton Friedman said they should look like in 1968. But monetary policy shocks don't account for any but a tiny part of output and inflation variation, quite contra Friedman (and Taylor, and many others') view.

Last, standard new Keyensian DSGE models have strong "Fisherian" properties. In response to long lasting or expected interest rate rises, inflation goes up. More on this later.

Ellen McGrattan

Ellen stole the show. (Slides.) Take a break, and watch the video. She manages to be hilarious and incisive. And unlike the rest of us, she didn't try to sheohorn a two hour lecture into her 15 minutes.

Her central points. First, like Harald, she points out that the models are driven by large shocks with less and less plausible structural interpretation, and thus further from the Lucas critique solution than once appeared to be the case. The shocks are really "wedges," deviations from equilibrium conditions of the model with unknown sources

What to do? Focus on rules and institutions. This is a deep point. Even DSGE modelers, in the desire to speak to policy makers, often adopt the static ISLM presumption that policy is about actions, about decisions, whether to raise or lower the funds rate. The other big Lucas point is that we should think about policy in terms of rules and institutions, not just actions.

Monetary policy and ELB

Stephanie Schmitt-Grohé (slides, video)  talked about the Fisherian possibility -- that raising interest rates raises inflation. New-Keynesian DSGE models, with rational expectations, have this property, especially for permanent or preannounced interest rate increases, and when at zero interest rates or otherwise in a passive regime where interest rates do not react more than one for one with inflation. She and Martin Uribe have been advocating this possibility as a serious proposal for Europe and Japan that want to raise inflation.

She presented some nice evidence that permanent increases in interest rates do increase inflation -- and right away, not just in the long run.

Mike Woodford. (slides, video)  gave a dense talk (37 slides, 20 minutes) on policy at the lower bound. During the ELB, central banks moved from interest rates to asset purchases and forward guidance. Mike asks,

To what extent does this mean that the entire conceptual framework of monetary stabilization policy needs to be reconsidered, for a world in which ELB might well continue periodically to bind? 

In classic form, Mike sets the question up as a Ramsey problem. Given a DSGE model, what is the optimal policy, given that interest rates are occasionally constrained? He derives from that problem a price level target. The price level target works, intuitively, by committing the central bank to a period of extra inflation after the zero bound ends. It is a popular form of forward guidance. The innovation here is to derive that formally as an optimal policy problem.

Mike's price level target is stochastic, changing optimally over time to respond to shocks. I'm a little skeptical that the central bank can observe and understand such shocks, especially given the above Uhlig-McGrattan discussion about the nature of shocks. Also, as I emphasize in comments, I'm dubious about the great power of promises of what the central bank will do in the far future to stimulate output today. I'm a fan of price level targets, but on both sides, not just as stimulus, but for utterly different reasons.

Mike takes on rather skeptically the common alternative -- quantitative easing, asset purchases during the time of the bound. He points out that to work, people have to believe that the increase in money is permanent, and won't be quickly withdrawn when the zero bound is over. As evidence, he points to Japan:

Similarly, he likes the price level target over forward guidance -- speeches in place of action -- as it is a more credible commitment to do things ex-post that the bank may not wish to do ex-post.

Finally, he addresses the puzzles of new Keynesian models at the zero bound -- forward guidance has stronger effects the further in the future is the promise; effects get larger as prices get less sticky, and so on. He argues that models should replace rational expectations with a complex k-step iterated expectations rule.

Me.

Video, slides from Sweden, slides from my webpage, written version. I covered this in a previous blog post, so won't repeat it all. I put a lot of effort in to it, and it summarizes a lot of what I've been doing in 15 minutes flat, so I recommend it (of course). It also offers more perspective on above points by Mike and Stephanie. My favorite line, referring to Mike's push for irrational expectations is something close to

"I never thought we would come to Sweden, that I would be defending the basic new-Keynesian program, and that Mike Woodford would be trying to tear it down. Yet here we are. Promote the fiscal equation from the footnotes and you can save the rest." 

Emi Nakamura

Poor Emi had to go last in an exhausting conference of jet-lagged participants. She did a great job (video, slides) covering a century of monetary history and monetary ideas clearly and transparently. These are great slides to use for an undergraduate or MBA class on monetary policy, as well. An abbreviated list:

• Gold standard
• Seasonal variation in interest rates under the gold standard; money demand shocks
• Money demand shocks in the 1980s -- how the supposedly "stable" V in MV=PY fell apart when the Fed pushed on M.
  
  
  
• Theoretical instability / indeterminacy of interest rate targets
• The switch to interest rate targets and corridors in operating procedures
• The (near-miraculous) success of inflation targets
  
• Taylor rules and other theory of determinate inflation under interest rate targets
• How is it "monetary economics" without money?
• Why did immense QE not cause inflation? 

The overarching theme is the grand story of a move, intellectual and practical, from money supply targets (of which gold is one) to interest rate targets.

Postlude

Monday featured two panels, Macroeconomic research and the financial crisis: A critical assessment, with Annette Vissing-Jørgensen, Luigi Zingales, Nancy Stokey, and  Robert Barro ; and Banking and finance research and the financial crisis: A critical assessment with Kristin Forbes, Ricardo Reis, Amir Sufi, and Antoinette Schoar.

Perhaps it's in the nature of panels, but I found these a disappointment, especially compared to the stellar presentations in the main conference. Also I think it would have been better to allow more (any, really) audience questions; the whole conference was a bit disappointing for lack of general discussion, especially with such a stellar group.

In particular, Luigi led by excoriating the profession for not paying attention to housing problems and financial crises. I thought this a bit unfair and simultaneously short-sighted. He singled out monetary economics textbooks, including Mike Woodford's, for omitting financial crises. Well, Mike omitted asteroid impacts too. It isn't a book about financial crises. And, after lamabasting all of us, he said not one word about events since 2009. What are we missing now? I had to stand up and ask that rude question, again suggesting that perhaps we are all not listening to Ken Rogoff this time. Annette went on to ask something like "don't you Chicago people believe in any regulation at all," and the respondents were too polite to say what an unproductive question that is and just move on.

Again, I offer apologies to authors and discussants I didn't get to. The whole thing was memorable, but there is only so much I can blog! Do go to the site and look at the other sessions, according to your interests.

Jitters

Or, "the beginning of the end, or the end of the beginning?" Or, "from demand to supply?"

An Op-Ed for The Hill with some extras:


The economic expansion and stock market runup have been going on for a decade, and a case of the jitters seems to be spreading. How long can this go on? Is the end around the corner?

After years of quiet, the stock market suddenly became volatile again last March. Volatility is a sign of uncertainty, and often presages a decline. Stock prices are high relative to earnings and dividends, which often precedes a fall. Short term interest rates have risen, and long term rates and short term rates are nearly the same. An inverted yield curve, when short term rates are higher than long term rates, is one of the most reliable warning signs of a recession. The unemployment rate is down to 3.9%, a level that historically has only happened at business cycle peaks — that were soon followed by troughs. House prices and credit are up too, as they were at recent peaks. Is it time to worry?

EconTalk

I did an EconTalk Podcast with Russ Roberts. The general subject is economic growth, the reasons it seems to be slipping away from us and policies (or non-policies) that might help.

As in other recent projects (growth essay, testimony) I'm trying to synthesize, and also to find policies and ways to talk about them that avoid the stale left-right debate, where people just shout base-pleasing spin ever louder. "You're a tax and spend socialist" "You just want tax cuts for your rich buddies" is getting about as far as "You always leave your socks on the floor" "Well, you spend the whole day on the phone to your mother."

We did this as an interview before a live audience, at a Chicago Booth alumni event held at Hoover, so it's a bit lighter than the usual EconTalk. This kind of thought helps the synthesis process a lot for me.  Russ' pointed questions make me think, as did the audience in follow up Q&A (not recorded). Plus, it was fun.

I always leave any interview full of regrets about things I could have said better or differently. The top of the regret pile here was leaving a short joke in response to Russ' question about what the government should spend more on. Russ was kindly teeing up the section of the growth essay "there is good spending" and perhaps "spend more to spend less" ideas in several other recent writings. It would have been a good idea to go there and spend a lot more time on the question.

Testimony 2

On the way back from Washington, I passed the time reformatting my little essay for the Budget committee to html for blog readers. See below. (Short oral remarks here in the last blog post, and pdf version of this post here.)

I learned a few things while in DC.

The Paul Ryan "A better way" plan is serious, detailed, and you will be hearing a lot about it. I read most of it in preparation for my trip, and it's impressive. Expect reviews here soon. I learned that Republicans seem to be uniting behind it and ready to make a major push to publicize it. It is, by design, a document that Senatorial and Congressional candidates will use to define a positive agenda for their campaigns, as well as describing a comprehensive legislative and policy agenda.

"Infrastructure" is bigger in the conversation than I thought. But since there is no case that potholes caused the halving of America's trend growth rate, do not be surprised if infrastructure fails to double the trend growth rate. It's also a bit sad that the most common growth idea in Washington is, acording to my commenters, about 2,500 years old -- employment on public works.

Washington conversation remains in thrall to the latest numbers. There was lots of buzz at my hearing about a recent census report that median family income was up 5%. Chicagoans used to get excited about the 40 degree February thaw.

The quality can be very very good. Congressman Price, the chair of my session, covered just about every topic in my testimony, and possibly better. Congressional staff are really good, and they are paying attention to the latest. If you write policy-related economics, take heart, they really are listening.

The questions at my hearing pushed me to clarify just how will debt problems affect the average American. What I had not said in the prepared remarks needs to be said. If we don't get an explosion of growth, the US will not be able to make good on its promises to social security, health care, government pensions, credit guarantees, taxpayers, and bondholders. Something's got to give. And the growing size of entitlements means they must give. Even a default on the debt, raising taxes to the long-run Laffer limit, will not pay for current pension and health promises. Those will be cut. The question is how. If we wait to a fiscal crisis, they will be cut unexpectedly and by large amounts, leaving people who counted on them in dire straits. Greece is a good example. If we make sensible sustainable promises now, they will be cut less, and people will have decades to adjust.


Ok, on to html testimony:

Growing Risks to the Budget and the Economy.

Testimony of John H. Cochrane before the House Committee on Budget.

September 14 2016

Chairman Price, Ranking Member Van Hollen, and members of the committee: It is an honor to speak to you today.

I am John H. Cochrane. I am a Senior Fellow of the Hoover Institution at Stanford University¹. I speak to you today on my own behalf on not that of any institution with which I am affiliated.

Sclerotic growth is our country's most fundamental economic problem.² From 1950 to 2000, our economy grew at 3.6% per year.³ Since 2000, it has grown at barely half that rate, 1.8% per year. Even starting at the bottom of the recession in 2009, usually a period of super-fast catch-up growth, it has grown at just over 2% per year. Growth per person fell from 2.3% to 0.9%, and since the recession has been 1.3%.

Testimony

I was invited to testify at a hearing of the House budget committee on Sept 14. It's nothing novel or revolutionary, but a chance to put my thoughts together on how to get growth going again, and policy approaches that get past the usual partisan squabbling. Here are my oral remarks. (pdf version here.) The written testimony, with lots of explanation and footnotes, is here. (pdf) (Getting footnotes in html is a pain.)

Chairman Price, Ranking Member Van Hollen, and members of the committee: It is an honor to speak to you today.

Sclerotic growth is our country’s most fundamental economic problem. If we could get back to the three and half percent postwar average, we would, in the next 30 years, triple rather than double the size of the economy—and tax revenues, which would do wonders for our debt problem.

Why has growth halved? The most plausible answer is simple and sensible: Our legal and regulatory system is slowly strangling the golden goose of growth.

How do we fix it? Our national political and economic debate just makes the same points again, louder, and going nowhere. Instead, let us look together for novel and effective policies that can appeal to all sides.

Regulation:

Macro-Finance

A new essay "Macro-Finance," based on a talk I gave at the University of Melbourne this Spring. I survey many current frameworks including habits, long run risks, idiosyncratic risks, heterogenous preferences, rare disasters, probability mistakes, and debt or institutional finance. I show how all these approaches produce quite similar results and mechanisms: the market's ability to bear risk varies over time, with business cycles. I speculate with some simple models that time-varying risk premiums can produce a theory of risk-averse recessions, produced by varying risk aversion and precautionary saving, rather than Keynesian flow constraints or new-Keynesian intertemporal substitution.

Update 11/30/2020. The link now works and points to the published article 

Equity financed banking video

Video of my talk at the Minneapolis Fed's "Ending Too Big to Fail" symposium. A link to the video (youtube) in case you don't see the above embedded version. The event webpage, with links to the other talks and the agenda.  Summary: AM: Dodd Frank is a big failure, we need a big fix. PM: We'll get it to work with little fixes here and there. I posted the text of my talk earlier.

The Habit Habit

The Habit Habit. This is an essay expanding slightly on a talk I gave at the University of Melbourne's excellent "Finance Down Under" conference. The slides

(Note: This post uses mathjax for equations and has embedded graphs. Some places that pick up the post don't show these elements. If you can't see them or links come back to the original. Two shift-refreshes seem to cure Safari showing "math processing error".)

Habit past: I start with a quick review of the habit model. I highlight some successes as well as areas where the model needs improvement, that I think would be productive to address.

Habit present: I survey of many current parallel approaches including long run risks, idiosyncratic risks, heterogenous preferences, rare disasters, probability mistakes -- both behavioral and from ambiguity aversion -- and debt or institutional finance. I stress how all these approaches produce quite similar results and mechanisms. They all introduce a business-cycle state variable into the discount factor, so they all give rise to more risk aversion in bad times. The habit model, though less popular than some alternatives, is at least still a contender, and more parsimonious in many ways,

Habits future: I speculate with some simple models that time-varying risk premiums as captured by the habit model can produce a theory of risk-averse recessions, produced by varying risk aversion and precautionary saving, as an alternative to  Keynesian flow constraints or new Keynesian intertemporal substitution. People stopped consuming and investing in 2008 because they were scared to death, not because they wanted less consumption today in return for more consumption tomorrow.

Throughout, the essay focuses on challenges for future research, in many cases that seem like low hanging fruit. PhD students seeking advice on thesis topics: I'll tell you to read this. It also may be useful to colleagues as a teaching note on macro-asset pricing models. (Note, the parallel sections of my coursera class "Asset Pricing" cover some of the same material.)

I'll tempt you with one little exercise taken from late in the essay.

Why and how we care about inequality

Note: These are remarks I gave in a concluding panel at the Conference on Inequality in Memory of Gary Becker, Hoover Institution, September 26 2014. The conference program here, and John Taylor's summary here, where you can see the great papers I allude to. I'll probably rework this to a more general essay, so I reserve the right to recycle some points later.

Why and How We Care About Inequality

Wrapping up a wonderful conference about facts, our panel is supposed to talk about “solutions” to the “problem” of inequality.

We have before us one “solution,” the demand from the left for confiscatory income and wealth taxation, and a substantial enlargement of the control of economic activity by the State.

Note I don’t say “redistribution” though some academics dream about it. We all know there isn’t enough money, especially to address real global poverty, and the sad fact is that government checks don’t cure poverty. President Obama was refreshingly clear, calling for confiscatory taxation even if it raised no income. “Off with their heads” solves inequality, in a French-Revolution sort of way, and not by using the hair to make wigs for the poor. The agenda includes a big expansion of spending on government programs, minimum wages, “living wages,” government control of wages, especially by minutely divided groups, CEO pay regulation, unions, “regulation” of banks, central direction of all finance, and so on. The logic is inescapable. To “solve inequality,” don’t just take money from the rich. Stop people, and especially the “wrong” people, from getting rich in the first place.

In this context, I think it is a mistake to accept the premise that inequality, per se, is a “problem” needing to be “solved,” and to craft “alternative solutions.”

Just why is inequality, per se, a problem?

Suppose a sack of money blows in the room. Some of you get $100, some get $10. Are we collectively better off? If you think “inequality” is a problem, no. We should decline the gift. We should, in fact, take something from people who got nothing, to keep the lucky ones from their $100. This is a hard case to make.

One sensible response is to acknowledge that inequality, by itself, is not a problem. Inequality is a symptom of other problems. I think this is exactly the constructive tone that this conference has taken.

But there are lots of different kinds of inequality, and an enormous variety of different mechanisms at work. Lumping them all together, and attacking the symptom, “inequality,” without attacking the problems is a mistake. It’s like saying “fever is a problem. So medicine shall consist of reducing fevers.”

Summer Institute

I just got back from the NBER Summer Institute. The Economic Fluctuations and Growth meeting organized by Larry Christiano and Chad Jones sparks some thoughts on where macro is and where we're going. (I also attended the monetary economics and asset pricing meetings, which were excellent and thought provoking too, but one can only blog so much.)

Review:

Asset Pricing MOOC Open

My Coursera Asset Pricing MOOC is now open. The direct link is here -- but you may need to register to see it. 

I recommend browsing the week 1 videos, especially the theory preview videos, if you want a sense of what it's all about. Week 0 is background material on continuous time math.

Week 0 (background) and week 1 are up now, 2 and 3 should be up later this week.

Warning, this is a PhD level asset pricing class, designed to get you in to the theory used for research-level asset pricing. It pretty much follows my textbook "Asset Pricing" (and supplementary material) You don't have to buy the text to take the Coursera class. People who just want to watch the videos are also welcome.

The Role of Monetary Policy, Revisited

I am giving a talk Thursday May 30, titled  "The Role of Monetary Policy, Revisited."  The event is at Booth's Gleacher Center in downtown Chicago, reception 4:30 and talk 5:15. It's part of a series of talks sponsored by the Becker-Friedman Institute.

The talk is based on  an essay I'm working on, and will be presenting at a few central banks this summer. Once per generation we re-think what central banks do, can't do, should do, and shouldn't do. Milton Friedman's famous 1968 address marked the last big transition. I think, we are in a similar moment. I will look at the big picture in the same spirit. I'm aiming at a serious talk, grounded in academic research, but accessible.

Blog followers, students, colleagues, friends, and even glider pilots are most welcome. Please rsvp so they know how many people to plan for.

The event announcement invitation and rsvp links are here on the BFI webpage

There is also an event announcement and rsvp link on the Booth Alumni events webpage here.

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The Becker Friedman Institute for Research in Economics of the University of Chicago cordially invites you to The Role of Monetary Policy Revisited A talk by John H. Cochrane, AQR Capital Management Distinguished Service Professor of Finance at the University of Chicago Booth School of Business Thursday, May 30, 2013 4:30 p.m. Reception 5:15 p.m. Talk and Q&A Executive Dining Room, Sixth Floor University of Chicago Gleacher Center 450 North Cityfront Plaza Drive Chicago, Illinois (map and directions) Please join us as University of Chicago Booth School of Business Professor John Cochrane reexamines Milton Friedman's 1968 presidential address to the American Economic Association. In this famous speech on the role of monetary policy, Friedman argued, "There is always a temporary trade-off between inflation and unemployment; there is no permanent trade-off." Starting from this perspective, Cochrane will reevaluate the role of monetary policy 45 years later. Is it effective? Can it fill all the roles people expect of it? How should monetary policy be conducted going forward? RSVP Please respond online by May 23. Please extend this invitation to others who might find the program of particular interest. Complimentary valet parking will be available at the Gleacher Center entrance. QUESTIONS If you have questions or require advance assistance, please contact Maria Bardo-Colon at 773.834.1898 or bfi@uchicago.edu. John H. Cochrane The AQR Capital Management distinguished service professor of finance at the University of Chicago Booth School of Business, Cochrane's scholarly work focuses on finance, monetary economics, macroeconomics, health insurance, time-series econometrics, and other topics. He is the author of Asset Pricing, a coauthor of The Squam Lake Report, a research associate of the National Bureau of Economic Research, a senior fellow of the Hoover Institution at Stanford University, and an adjunct scholar of the CATO Institute. He blogs as The Grumpy Economist. Cochrane earned a bachelor's degree in physics at Massachusetts Institute of Technology and PhD in economics at the University of California, Berkeley. He was a member of the University of Chicago Department of Economics before joining Chicago Booth.

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More Interest-Rate Graphs

For a talk I gave a week or so ago, I made some more interest-rate graphs. This extends the last post on the subject. It also might be useful if you're teaching forward rates and expectations hypothesis. 

The question: Are interest rates going up or down, especially long term rates?  Investors obviously care, they want to know whether they should put money in long term bonds vs. short term bonds.  As one who worries about debt and inflation, I'm also sensitive to the criticism that market rates are very low, forecasting apparently low rates for a long time. Yes, markets never see bad times coming, and markets 3 years ago got it way wrong thinking rates would be much higher than they are today (see last post) but still, markets don't seem to worry.

But rather than talk, let's look at the numbers. I start with the forward curve. The forward rate is the "market expectation" of interest rates, in that it is the rate you can contract today to borrow in the future. If you know better than the forward rate, you can make a lot of money.

Here, I unite the recent history of interest rates together with forecasts made from today's forward curve. The one year rate (red) is just today's forward curve. I find the longer rates as the average of the forward curves on those dates. Today's forward curve is the market forceast of the future forward curve too, so to find the forecast 5 year bond yield in 2020, I take the average of today's forward rates for 2020, 2021,..2024.

I found it rather surprising just how much, and how fast, markets still think interest rates will rise. (Or, perhaps, how large the risk premium is. If you know enough to ask about Q measure or P measure, you know enough to answer your own question.)

Debt and growth in 10 minutes

This is a short video from last year. I only just found out it exists. It still seems pretty topical, and (for once) condensed because Lars Hansen really forced me to obey the 10 minute time limit!

There is a better link here from the BFI page here that covers the whole event, but I couldn't figure out how to embed those.

Buffett Math

Warren Buffett, New York Times on November 25th 2012:

Suppose that an investor you admire and trust comes to you with an investment idea. “This is a good one,” he says enthusiastically. “I’m in it, and I think you should be, too.”

Would your reply possibly be this? “Well, it all depends on what my tax rate will be on the gain you’re saying we’re going to make. If the taxes are too high, I would rather leave the money in my savings account, earning a quarter of 1 percent.” Only in Grover Norquist’s imagination does such a response exist.

MBA final exam question: Explain the mistake in this paragraph.