Shiller PE Ratio Chart
Current Shiller PE Ratio: 24.45 +0.04 (0.17%)
4:36 pm EDT, Tue May 21
Mean: 16.47
Median: 15.89
Min: 4.78 (Dec 1920)
Max: 44.20 (Dec 1999)

Shiller PE ratio for the S&P 500.

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.