CHART OF THE DAY: The Predictive Power Of The Famous Shiller PE Ratio

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The Shiller PE ratio, or the cyclically-adjusted price-earnings ratio, may be the most respected measure of stock market value.

In short, the Shiller PE is the price of the stock market divided by the average of 10 years worth of earnings.  If the ratio is above the long-term average, the stock market is considered expensive.

Credit Suisse’s Andrew Garthwaite compiled the annualized trailing 5-year returns based on certain levels of the Shiller PE. 

As expected, the lower the ratio, the better the returns.  But the relationship isn’t exactly linear.

Here’s Garthwaite’s chart.  At current elevated levels, the Shiller PE is signaling a period of low returns.

chart of the day, shiller pe results, january 2013

Photo: Credit Suisse

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