S&P 500 P/E ratio history

The median S&P 500 stock's P/E is 23.8x, lower than 68% of its weekly readings over the last five years.

Median stock P/E, weekly

S&P 500 median stock P/E

32ndpercentile

of its weekly readings over the last five years

Within its usual range

Week of Oct 26, 2026 · 419 stocksShowing the last complete build, from Oct 30, 2026.

Read this chart as a table (first week of each year)

Where the median stock's P/E sits in its own five-year range, 0 to 100.

Each week, we compute each stock's trailing P/E and P/S from its SEC filings and that week's closing price, then combine them three ways: the median stock, market-cap weighted, and market-cap weighted without the Magnificent 7.
Every week uses today's S&P 500 members (as of Oct 20, 2026). Companies that left the index are missing from earlier weeks, and companies that joined later count before they joined, so early years show how today's members were priced, not the index as it stood then.
Early years rest on fewer stocks. Companies began filing machine-readable financial statements with the SEC in stages from 2009 to 2011, and a trailing P/E needs four quarters of them. A week counts only when at least 100 stocks have the numbers, so the median stock's P/E starts in Jul 2010. The table under the chart shows the count for each year.
These are our estimates from company filings, not official index figures. Sector readings rank each stock against its own history, including stocks outside the S&P 500. How we calculate valuation history