S&P 500 PE Ratio

Chart
Current S&P 500 PE Ratio: 21.99 -0.04 (-0.16%)
4:32 pm EST, Fri Jan 27
Mean: 16.42
Median: 15.81
Min: 4.78 (Dec 1920)
Max: 44.20 (Dec 1999)

Price earnings ratio is based on average inflation-adjusted earnings from the previous 10 years, known as the Cyclically Adjusted PE Ratio (CAPE Ratio), Shiller PE Ratio, or PE 10 — FAQ.

Data courtesy of Robert Shiller from his book, Irrational Exuberance.