S&P 500 PE Ratio

S&P 500 PE Ratio Chart
Current S&P 500 PE Ratio: 21.34 -0.09 (-0.44%)
4:07 pm EDT, Wed May 16
Mean: 16.43
Median: 15.84
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.