By Noah Solomon

Special to the Financial Independence Hub

As we have written before, sentiment and emotions can have an outsized influence on investor psychology and investment decisions. Relatedly, there is a powerful inclination among investors to perceive markets that have outperformed as being less risky than those that have underperformed.

Interestingly, this tendency exists not just among individual investors, but is also prevalent in the professional investment community. A 2008 study by finance Professors Amit Goyal and Sunil Wahal explored the performance of investment managers who had been fired by institutional investors. The analysis compared the managers’ performance in the three years before being fired with their subsequent three-year performance.  The results of the study are summarized in the following graph.

The Selection and Termination of Investment Management Firms by Plan Sponsors

On average, fired managers had poor performance in the three years preceding their termination, with average annual underperformance of 4.1% vs. their benchmarks. This figure should come as no surprise, as you wouldn’t expect that they were fired for knocking the lights out! However, what may be counter-intuitive to many is that these managers tended to subsequently outperform, with average annual outperformance of 4.2% over the three years following their termination.

Clearly, not only does looking in the rear-view mirror fail to prevent you from hitting something that is in front of you but may in fact cause it!

The other takeaway is that even seasoned, institutional investors can be swayed by short-term performance, which in turn can lead to decisions which are both ill-timed and economically perverse.

Beware the Mean Reversion Boogeyman

Last year saw a continuation of a long-established trend of U.S. stock outperformance, with the S&P 500 rising 28.7% as compared to 8.3% for the MSCI All Country World Index (ACWI) Ex-U.S.  From the end of 2008 through the end of last year, the S&P 500 rose at an annualized rate of 16.0%, producing a cumulative return of 587.3%. In comparison, the ACWI Ex-U.S. Index rose at an annual rate of 8.6% and delivered a cumulative return of 190.7%.

The outperformance of U.S. stocks argues for actively reducing U.S. exposure and increasing allocations to other regions, as the mean-reverting, contrarian nature of investment manager performance can also be applied at the country level. The following chart covers the period from 1970-2021 and includes the U.S., U.K., Germany, France, Australia, Japan, Hong Kong, and Canada. Specifically, it illustrates the results of investing every three years in a portfolio of country indexes based on their trailing returns over the previous three years.

3-Year Performance of Countries ranked by Trailing 3-Year Performance

The chart brings fresh perspective to the standard regulatory disclosure language in the marketing materials of investment funds, which states that “Past performance is no guarantee of future returns.”

Outperforming countries tend to become subsequent underperformers : those that have had superior returns over the past three years tend to produce relatively poor results over the next three years. Conversely, underperformers tend to subsequently outperform: those that have lagged over the past three years tend to outperform over the next three years. Continue Reading…