GMO letter for the third quarter ended September 30, 2016.


Rather like a parrot I have been repeating for 10 quarters now my belief that we would not have a traditional bubble burst in the US equity market until we had reached at least 2300 on the S&P, the threshold level of major bubbles in the past, and at least until we had reached the election. Well, we are close on both counts now. My passionate hope was that I would then, perhaps 6 months after the election, recommend a major sidestep of the coming deluge that would conveniently have arrived 6 to 12 months later, allowing us then, after a 50% decline, to leap back into cheap equity markets enthusiastically, more enthusiastically, that is, than we did last time in 2009. Thus we would save many of our clients tons of money as we had (eventually) in the 2000 bust, at least for those clients who stayed with us for the ride, and in 2007. I consider myself a bubble historian and one who is eager to see one form and break: I have often said that they are the only really important events in investing.

I have come to believe, however, very reluctantly, that we bubble historians have, together with much of the market, been a bit brainwashed by our exposure in the last 30 years to 4 of the perhaps 6 or 8 great investment bubbles in history: Japanese land and Japanese equities in 1989, US tech in 2000, and more or less everything in 2007. For bubble historians eager to see pins used on bubbles and spoiled by the prevalence of bubbles in the last 30 years, it is tempting to see them too often. Well, the US market today is not a classic bubble, not even close. The market is unlikely to go “bang” in the way those bubbles did. It is far more likely that the mean reversion will be slow and incomplete. The consequences are dismal for investors: we are likely to limp into the setting sun with very low returns. For bubble historians, though, it is heartbreaking for there will be no histrionics, no chance of being a real hero. Not this time.

The 2300 level on the S&P 500, which marks the 2-standard-deviation (2-sigma) point on historical data that has effectively separated real bubbles from mere bull markets, is in this case quite possibly a red herring. It is comparing today’s much higher pricing environment to history’s far lower levels. I have made much of the convenience of 2-sigma in the past as it has brought some apparent precision to the more touchy-feely definition of a true bubble: excellent fundamentals irrationally extrapolated. Now, when this definition conflicts with the 2-sigma measurement – ironically, it was chosen partly because it had never conflicted before – I apparently prefer the less statistical test. But you can imagine the trepidation with which I do this.

Hidden by the great bubbles of 2000 and 2007, another, much slower-burning but perhaps even more powerful force, has been exerting itself: a 35-year downward move in rates (see Exhibit 1), which, with persistent help from the Fed over the last 20 years and a shift in the global economy, has led to a general drop in the discount rate applied to almost all assets. They now all return 2-2.5% less than they did in the 1955 to 1995 era (or, as far as we can tell from incomplete data, from 1900 to 1995).


This broad shift in available returns gives rise to the question of what constitutes fair value in this changed world; will prices regress back toward the more traditional levels? And if they do, will it be fast or slow?

Another contentious question is whether abnormally high US profit margins will also regress, and, if so, by how much and how fast? (This will be discussed in more detail next quarter.)

Counterintuitively, it turns out that the implications for the next 20 years for pension funds and others are oddly similar whether the market crashes in 2 years, falls steadily over 7 years, or whimpers sideways for 20 years. The real difference in these flight paths will be, of course, over the short term. Are we going to have our pain from regression to the mean in an intense 2-year burst, a steady 7-year decline, or a drawn-out 20-year whimper?

The caveat here is that while I am very confident in saying that we are not in a traditional bubble today, all the other arguments below are more in the nature of thought experiments or, less grandly, simply thinking aloud. I am asking you – especially you value managers – to think through with me some of these varied possibilities and their implications. What follows is my attempt to answer these, for me, very uncomfortable questions.

GMO: The Case for a Whimper

1. Classic investment bubbles require abnormally favorable fundamentals in areas such as productivity, technology, employment, and capacity utilization. They usually require a favorable geo-political environment as well. But these very favorable factors alone are not enough.

2. Investment bubbles also require investor euphoria. This euphoria is typically represented by a willingness to extrapolate the abnormally favorable fundamental conditions into the distant future.

3. The euphoric phases of these epic bull markets have tended to rise at an accelerating rate in the final two to three years and to fall even faster. Exhibit 2 shows four of my all-time favorites. True euphoric bubbles have no sound economic underpinning and so are particularly vulnerable to sudden bursting when some unexpected bad news occurs or when selling just starts… “comes in from the country” as they said in 1929.


4. We have been extremely spoiled in the last 30 years by experiencing 4 of perhaps the best 8 classic bubbles known to history. For me, the order of seniority is, from the top: Japanese land, Japanese stocks in 1989, US tech stocks in 2000, and US housing, which peaked in 2006 and shared the stage with both the broadest international equity overpricing (over 1-sigma) ever recorded and a risk/return line for assets that appeared to slope backwards for the first time in history – investors actually paid for the privilege of taking risk.

5. What did these four bubbles have in common? Lots of euphoria and unbelievable things that were widely believed: Yes, the land under the Emperor’s Palace really did equal the real estate value of California. The Japanese market was cheap at 65x said the hit squad from Solomon Bros. Their work proved that with their low bond rates, the P/E should have been 100. The US tech stocks were 65x. Internet stocks sold at many multiples of sales despite a collective loss and Greenspan (hiss) explained how the Internet would usher in a new golden age of growth, not the boom and bust of productivity that we actually experienced. And most institutional investment committees believed it or half believed it! And US house prices, said Bernanke in 2007, “had never declined,” meaning they never would, and everyone believed him. Indeed, the broad public during these four events, two in Japan and

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