How Accurate Is the CAPE Ratio at Predicting Stock Market Crashes? The 100-Year Scorecard: 4 Hits, 3 Misses, 2 False Alarms
If the CAPE ratio is at 40 — nearly the highest in 145 years — is a crash coming? Sometimes it warns. Sometimes it cries wolf. And three of the worst crashes in history arrived with the CAPE looking perfectly ordinary. This briefing scores the ratio the way you would score any forecasting tool: every major market peak since the data begins, the CAPE reading at the time, and what actually happened next. No cherry-picking, no single crash as proof. All figures are as of November 12, 2026, unless noted otherwise. Where the CAPE stands right now The S&P 500's CAPE stood at 40.09 at the close on November 12, 2026 — the second-highest reading in the history of the series. The ratio divides the index's price by its average inflation-adjusted earnings over the past ten years. Its long-run mean is 17.45 and its median is 16.14, going back to 1871. The all-time high is 44.19, set in December 1999. The low is 4.78, from December 1920. It has read above 40 in every month since May 2026...