P/E10 and Market Valuation: September 2025

Published on October 1, 2025

Here is the latest update of a popular market valuation method, Price-to-Earnings (P/E) ratio, using the most recent Standard & Poor's "as reported" earnings and earnings estimates, and the index monthly average of daily closes for the past month. The latest trailing twelve months (TTM) P/E ratio is 28.4 and the latest P/E10 ratio is 28.6, the highest level since November 2021.

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Based on the September S&P 500 average of daily closes, the Crestmont P/E of 43.2 is 183% above its arithmetic mean, 210% above its geometric mean, and is in the 100th percentile of this 14-plus-decade series.