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.
12-month real earnings per share inflation adjusted, constant October, 2020 dollars. Sources: Standard & Poor's for current S&P 500 Earnings. Robert Shiller and his book Irrational Exuberance for historic S&P 500 Earnings.
Earnings Yield = trailing 12 month earnings divided by index price (or inverse PE) Yields following September, 2020 (including current yield) are estimated based on 12 month earnings through September, 2020 the latest reported by S&P. Source: Standard & Poor's.
Price to earnings ratio, based on trailing twelve month as reported earnings. Current PE is estimated from latest reported earnings and current market price. Source: Robert Shiller and his book Irrational Exuberance for historic S&P 500 PE Ratio.