Here are several resources where you can find historical price-to-earnings (P/E) ratio charts for the S&P 500:

1. Macrotrends offers an interactive chart that displays the trailing twelve-month S&P 500 P/E ratio dating back to 1926. This source provides a comprehensive view of how the P/E ratio has fluctuated over nearly a century. You can view the chart here.

2. GuruFocus presents data on the S&P 500 P/E ratio, including historical peaks and lows. As of March 2025, the P/E ratio was reported at 26.825, with historical highs and lows recorded at 131.391 and 5.31, respectively. More details can be found here.

3. The website Multpl provides a detailed table showing the S&P 500 P/E ratio by year, making it easy to track changes across different time periods. You can explore the data here.

4. Longtermtrends features the Shiller P/E ratio, which adjusts the earnings for inflation based on a ten-year average. This offers a long-term perspective on S&P 500 valuations. Access the information here.

5. Current Market Valuation has a chart that illustrates the standard calculation of the S&P 500 P/E ratio since 1950, providing insight into current market valuation. Check it out here.

6. YCharts offers an in-depth view of the S&P 500 P/E ratio, including historical data from 1988 to 2024, along with charts and statistics. Visit their site for more detailed analysis here.

7. Finally, World PE Ratio presents a chart showing the changes in the S&P 500 Index P/E Ratio over time, allowing users to see trends over various timeframes. You can access this information here.

These resources will provide you with detailed and historical insights into the P/E ratios of the S&P 500, helping you understand market valuations over time.

Sources

S&P 500 PE Ratio - 90 Year Historical Chart - MacrotrendsS&P 500 PE Ratio Charts, Data - GuruFocusS&P 500 PE Ratio by Year - MultplShiller S&P 500 PE Ratio - LongtermtrendsPrice/Earnings Ratio - Current Market ValuationS&P 500 P/E Ratio (I:SP500PER) - YChartsS&P 500 Index: current P/E Ratio - World PE Ratio

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