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.

Problems viewing this e-mail? View it in a browser.

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.)


How can the forecast rise faster than the actual long term yields? Well, remember that long yields are the average of expected future short rates, and if short rates are below today’s 10 year rate for 5 years, then they must be above today’s 10 year rate for another 5 years. So, it’s a misconception to read from today’s 2% 10 year rate that markets expect interest rates to be 2% in the future. Markets expect a rise to 4% within 10 years. 

The forward curve has the nice property that if interest rates follow this forecast, then returns on bonds of all maturities are always exactly the same. The higher yields of long-term bonds exactly compensate for the price declines when interest rates rise. I graphed returns on bonds of different maturities here to make that point.

So, Mr. Bond speculator, if you believe the forecast in the first graph, it makes absolutely no difference whether you buy long or short. Otherwise, decide whether you think rates will rise faster or slower than the forward curve.

Now, let’s think about other scenarios. One possibility is Japan. Interest rates get stuck at zero for a decade. This would come with sclerotic growth, low inflation, and a massive increase in debt, as it has in Japan. Eventually that debt is unsustainable, but as Japan shows, it can go on quite a long time. What might that look like?

Here is a “Japan scenario.” I set the one year rate to zero forever. I only changed the level of the market forecast, however, not the slope. Thus, to form the expected forward curve in 2020, I shifted today’s forward curve downwards so that the 2020 rate is zero, but other rates rise above that just as they do now.

This scenario is another boon to long term bond holders. They already got two big presents. Notice the two upward camel-humps in long term rates – those were foreasts of rate risks that didn’t work out, and people who bought long term bonds made money.

In a Japan scenario that happens again. Holders of long-term government bonds rejoice at their 2% yields.  They get quite nice returns, shown left, as rates fail to rise as expected and the price of their bonds rises. Until the debt bomb explodes.

OK, what if things go the other way? What would an unexpectedly large rise in interest rates look like? 
For example Feburary 1994 looked a lot like today, and then rates all of a sudden jumped up when the Fed started tightening.  

To generate a 1994 style scenario from today’s yields, I did the opposite of the Japan scenario. I took today’s forward curve and added 1%, 2%, 3% and 4% to the one-year rate forecast. As with the Japan scenario, I shifted the whole forward curve up on those dates. We’ll play with forward steepness in a moment.

Here are cumulative returns from the 1994 scenario. Long term bonds take a beating, of course. Returns all gradually rise, as interest rates rise. (These are returns to strategies that keep a constant maturity, i.e. buy a 10 year bond, sell it next year as a 9 year bond, buy a new 10 year bond, etc)

These have been fun, but I’ve only changed the level of the forward curve forecast, not the slope. Implicitly, I’ve gone along with the idea that the Fed controls everything about interest rates. If you worry, as I do, you worry that long rates can go up all on their own. Japan’s 10 year rate has been doing this lately. When markets lose faith, long rates rise. Central bankers see “confidence” or “speculators"  or "bubbles” or “conundrums.” What does that look like?

To generate a “steepening” scenario, I imagined that markets one year from now decide that interest rates in 2017 will spike up 5 percentage points. This may be a “fear” not an “expectation,” i.e. a rise in risk premium.

Then, the 5 and 10 year rates rise immediately, even though the Fed (red line) didn’t do anything to the one-year rate. The bond market vigilantes stage a strike on long term debt.

Here are the consequences for cumulative returns of my steepening scenario. The long term bonds are hit much more than the shorter term bonds. This really is a bloodbath for 10 year and higher investors, leaving those under 5 years much less hurt.

So what will happen? I don’t know, I don’t make forecasts. But I do think it’s useful to generate some vaguely coherent scenarios. The forward curve is not a rock solid this is what will happen forecast. The forward curve adds up all of these possiblities, with probabilities assigned to each, plus risk premium. There is a lot of uncertainty, and good portfolio formation starts with risk management not chasing alpha.

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.

How do we decide whether to invest in a project?  Discounted cash flow.

For example, suppose you’re thinking of building a factory (or starting a business). Once built, your best guess is that the factory will produce $10 profit every year. Discounting at a 5% required return, typical of stock market investments, the value of that profit stream is 1/.05=20 times the yearly profit, or $200. If the factory costs $150 to build, it’s a good deal and will return more than its costs. You build it. If the factory costs $250 to build, you walk away.

Did you forget to put in after-tax cash flows? Whoops, that’s a B- now at best. For example, if the tax rate is 50%, then your after-tax profits are only $5 each year. Now the value of the profit stream is only $100. The factory still costs $150 to build however, so now you’d be a fool to do it. It truly is better to leave your money in the bank earning a quarter of a percent.

Mr. Buffett made an elementary accounting mistake. How did he get it wrong? Implicitly, he is thinking that he pays $100, then gets back $100 for sure, and only the profit is taxed. He’s thinking that a 5% rate of return gets cut to 2.5%, which is still better than 0.025%. But when you build a factory or start a business, you are not guaranteed return of principal. You only get the profits, if any. If the government taxes half the profits, that’s like taking half the initial investment away.

This is perhaps an understandable mistake for a financial investor such as Mr. Buffett. In my example, the market value of the factory was $200, and falls to $100 when the tax is imposed. Mr. Buffett doesn’t build factories or start businesses, he buys them.  Now, Mr. Buffett – ever the “value” investor – can swoop in, buy the factory for $100, and a $5 per year after-tax cashflow generates the same 5% rate of return. But nobody will build new factories, and that’s the economic damage.

Ok, now you get an A. Let’s go for the A+.

Mr Buffett ignored risk. If somebody offers you a 5% rate of return, risk free, when Treasury bills offer you a quarter of 1 percent, his name is Madoff, not Buffett-Buddy.

Mr. Buffett wants you to think his investments are arbitrage opportunities, and a 2.5% arbitrage is as attractive as a 5% arbitrage. That’s false. Investments involve bearing risk, and taxes make those investments directly worse.

Now, the effect of taxes here is subtle. Yes, a 50% tax rate cuts a 5% expected return down to 2.5%. But it also cuts volatility too. Isn’t this just like deleveraging? Answer: no, because unless you’re investing in green energy boodoggles only available to Administration cronies, the government takes your profits, but does not reimburse your losses.

If the investment makes 10%, you get 5%. If it makes 5%, you get 2.5%. But if it loses 10%, you lose 10%. It’s a strictly worse investment when taxed. (Yes, you might be able to sell the losses if the IRS doesn’t notice what you’re up to… but now you know why Buffett is a “master of tax avoidance.”)

And there is always another margin: If rates of return on investment look lousy, just stop investing at all and go on a consumption binge. The estate tax is a big subsidy to the round-the-world cruise and private jet industries. 

I am really amazed by how this argument has evolved. Only a few months ago, supporters of the Administration’s plans for higher tax rates admitted the plain fact that higher tax rates on investment are bad for growth. But, they argued that higher taxes would be good for other goals, like “fairness,” redistribution, or winning elections important for other policies they like such as ACA. (These taxes are not going to put a dent in the deficit.)  And we had a sensible argument about how bad the growth effects would be, and how long it would take for them to kick in.

Now they’re trying to argue that taxes aren’t bad for the economy at all.  Some are suggesting higher investment tax rates are actually good for the economy.  All in the face of the natural experiment playing out in front of us across the Atlantic. The contortions needed to make this argument are just embarrassing. As above.

It seems clear to me that the Administration wants to raise the tax rate on high income people for political reasons, whether or not they raise tax revenues from such people; witness the deafening silence about reforming the chaotic tax code. The Buffetts of the world who can exploit the loopholes in the tax code and lobby for more will do fine in the new world. But they shouldn’t stoop to such obvious silliness to try to fool the rest of us that pain don’t hurt.

(Thanks to Cliff Asness who brought this to my attention and suggested some of the arguments.)

Unraveling the Mysteries of Money

Harald Uhlig and I did a fun interview run by Gideon Magnus (Chicago PhD) at Morningstar. We talk about the foundations of money, fiscal theory, monetary policy, European debt problems, etc. Gideon framed it well, and Harald is really sharp. Somebody combed my hair. A cleaned up version of the interview appeared in the Morningstar Advisor Magazine (html) (A prettier pdf)



A link in case the video doesn’t work or doesn’t embed well (if you see “server application unavailable” the link usually still works), or if you want the original source.

The video starts a little abruptly, as it left out Gideon’s thoughtful introduction (it’s in the Magazine) and framing question:

Gideon Magnus: I want to discuss the value of money and the idea that money is valued similarly to any other asset. Are there really assets backing money? If so, what are they? John, please explain.