Posted by: investment-fiduciary on: April 1, 2009
Out of curiosity, I took the S&P 500 annual return data since 1926, calculated the index’s moving 10-year returns and produced the chart below. Two things are worth noting:
1. The 10 years ending 2008 are the worst ever for the index, with a total return of -13%.
2. The S&P 500’s 10-year return dynamic seems to follow a periodic pattern. The second worst 10-year period ended in 1938 (-9%); and the third worst 10-year period ended in 1974 (13%), almost right in the middle of 1938 and 2008. Serendipity?

S&P 500 10-year return dynamic
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I thought the S&P500 only came into being in the 1950s, and thus did not exist during the Great Depression?
1 | Paul Perry
April 2, 2009 at 8:37 pm
S&P 500 10 year return data is also available here: http://www.nytimes.com/2009/02/07/business/07charts.html .