Quick take: Based on the September S&P 500 average of daily closes, the Crestmont P/E of 39.5 is 162% above its arithmetic mean, 185% above its geometric mean, and is at the 99th percentile of this 14-plus-decade series.
The 2011 article P/E: Future On The Horizon by Advisor Perspectives contributor Ed Easterling provided an overview of Ed's method for determining where the market is headed. His analysis was quite compelling. Accordingly, we include the Crestmont Research data to our monthly market valuation updates. See also his latest update: Understanding Secular Stock Market Cycles.
The first chart is the Crestmont equivalent of the cyclical P/E10 ratio chart.
For a closer look at the chart above, I have included the chart below starting at 1965. Note that the quintiles become more evenly spaced out.
The Crestmont P/E of 39.5 is 162% above its arithmetic mean, 185% above its geometric mean, and is at the 99th percentile of this 14-plus-decade series. I've highlighted a couple more level-driven periods in this chart: the current rally, which started in early 2014, and the two months in 1929 with P/E above the 25 level.
The current period is within the same neighborhood as both the tech bubble and the 1929 periods, all with P/E above 25 and is certainly in the zone of "irrational exuberance". Note on inflation: the inflation figure is extrapolated for last month based on the previous two months.
Again, for a closer look at the scatter chart above, we have included the same chart below starting at 1965.
Crestmont P/E 10 Deviation from Mean
Here is a pair of charts illustrating the historic Crestmont P/E ratio from its mean (average) and geometric mean with callouts for peaks and troughs along with the latest values.
The latest data point is 162% above its arithmetic mean and 185% above its geometric mean.
Background on Ed Easterling's Crestmont P/E
For a better understanding of these charts, please see Ed's two-part commentary here:
Ed Easterling is the author of Probable Outcomes: Secular Stock Market Insights and award-winning Unexpected Returns: Understanding Secular Stock Market Cycles. He is currently President of an investment management and research firm. In addition, he previously served as an adjunct professor and taught the course on alternative investments and hedge funds for MBA students at SMU in Dallas, Texas. Mr. Easterling publishes provocative research and graphical analyses on the financial markets at www.CrestmontResearch.com.
ETFs associated with the S&P 500 include: iShares Core S&P 500 ETF (IVV), SPDR S&P 500 ETF Trust (SPY), Vanguard S&P 500 ETF (VOO), and SPDR Portfolio S&P 500 ETF (SPLG).
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