The Next 7 Years

What returns are you expecting from stocks and bonds over the next 7 years?

This is a question that GMO (one of the largest and most respected asset managers) attempts to answer on a quarterly basis.

Their most recent forecast was downright depressing: -2.2% per year from large-cap U.S. stocks and +1.9% per year from U.S. bonds. If correct, it would mean a 60/40 portfolio of U.S. stocks and bonds would generate a return of -0.6% per year over the next 7 years.

By comparison, GMO is expecting +3% per year from cash, implying that there is little to be gained today from taking risks.

gmo 7 year forecast image1

Source: Note: Nominal Total Return derived from GMO’s real return and adding their inflation assumption of 2.2% per year.

What was GMO expecting 7 years ago?

Somewhat better returns: +2.7% per year from large-cap U.S. stocks and +2.8% per year from U.S. bonds.

gmo 7 year forecast image2

Source: Note: Nominal Total Return derived from GMO’s real return and adding their inflation assumption of 2.5% per year.

What actually happened?

U.S. large-cap stocks returned +13.2% (10.5% above forecast) per year and U.S. bonds returned +2.5% per year (0.3% below forecast). A 60/40 portfolio of U.S. large-cap stocks and bonds returned 8.9% per year versus 2.7% expected.

gmo 7 year forecast image3

What went wrong?

Built into GMO’s assumptions was a mean reversion in valuations and profit margins which were deemed to be elevated in June 2011. Instead of mean-reverting, valuations and profit margins would continue to expand over the subsequent 7 years.

gmo 7 year forecast image4

Source: Shiller.


Forecasting is an extremely difficult game. GMO has some of the most highly compensated, brightest minds in the business crunching numbers to arrive at these projections. You can be sure that they spend hours upon hours debating the assumptions and methods used. They are trying very hard to get it right.

So when they said in 2011…

  1. That U.S. small caps will return 0.1% per year. They actually returned 12.0% per year, that should tell you just how wide the “margin of error” can be in this business.
  2. Those equities ranged from “unattractive to very unattractive” and that the S&P 500 is “worth no more than 950,” that should tell you how hard valuation analysis can be (S&P 500 today: 2,794).
  3. That “Emerging markets will outperform …  for the next seven years”. Emerging Markets return 0.7% per year versus 13.2% for U.S. large caps, that should tell you that trying hard is not enough in a discipline where randomness dominates outcomes.
  4. That “risk avoidance looks like a good idea” and “Cash should be seen as a safe haven replete with important optionality”. Cash returns 0.5% per year, that should tell how long “dry powder” can remain dry.

Where did GMO go wrong?

This assumption, contained in a January 2010 letter, may shed some light:

“In contrast to predicting the impossibly difficult real world, predicting market outcomes is relatively straightforward. Profit margins and P/E ratios always seem to pass through fair value if, and it’s a big if, you can just be patient enough. Normalcy is what we assume in our 7-year forecasts.”

If they blundered at all, it was in assuming “normalcy” and believing that “predicting market outcomes is relatively straightforward.” There is nothing “normal” about the distribution of investment returns and nothing straightforward about arriving at a specific return number (to one decimal place) over a 7-year period. There is a huge difference between valuation and timing, and the range of possible outcomes over a 7 year period, particularly within in equities, is enormous.

The average investor doesn’t need to have an opinion on the next 7 years in order to invest today. In fact, most would be better off in simply saying “I don’t know” when asked which asset class will be the top performer. For if they have the humility to admit to those 3 simple words, they will be more inclined to build a diversified portfolio and stick with it over time. If they can do that and nothing else they will beat most of the forecasters and “world-class” investors by default and can spend the next 7 years worrying about the many more important things in life than investment returns.


Related Posts:

I Don’t Know

Valuation and Bear Markets?

When Mean Reversion Fails

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Charlie Bilello is the Director of Research at Pension Partners, LLC, an investment advisor that manages mutual funds and separate accounts. He is the co-author of four award-winning research papers on market anomalies and investing. Charlie is responsible for strategy development, investment research and communicating the firm’s investment themes and portfolio positioning to clients. Prior to joining Pension Partners, he was the Managing Member of Momentum Global Advisors. He previously held positions as a Credit, Equity and Hedge Fund Analyst at billion dollar alternative investment firms.

Charlie holds a J.D. and M.B.A. in Finance and Accounting from Fordham University. He has also done a B.A. in Economics from Binghamton University. He is a Chartered Market Technician (CMT) and also holds the Certified Public Accountant (CPA) certificate.

In 2017, Charlie was named the StockTwits Person of the Year. He has been named by Business Insider and MarketWatch as one of the top people to follow on Twitter. His work has also been featured in Barron’s, Bloomberg, and the Wall Street Journal.

You can follow Charlie on twitter here.


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