Case Study: High-Flying Stocks Feel the Weight After Surpassing 50x P/E Ratios
What goes up must come down — according to Isaac Newton, and apparently Wall Street. A recent Financial Times contribution by Trivariate Research concluded that stocks hitting 50x forward price-to-earnings (P/E) ratios tend to stumble six to nine months later. While growth stocks have driven market gains for years, the analysis highlights a market gravity that could spell trouble for popular picks.
- Out of 900 companies analyzed, ~20 stocks reach the 50x forward P/E mark annually — historically, their P/E ratios contract to an average of 37x within a year, typically leading to underperformance.
- Since 2003, these high-value stocks have trailed the market by an average of 12% over the next two years, with just 37% outperforming.
The gravity of valuations: AMD has plunged 30% since crossing the 50x P/E threshold in Feb. 2024, a cautionary tale for high-flyers like Costco, Carvana, and Iron Mountain. While investors needn’t panic at first sight of a 50x earnings multiple, the research suggests trimming positions within six to nine months to avoid potential declines. Even Newton, who famously lost his fortune in the 1720 South Sea Bubble, would agree: market gravity is real.
