Over the past 10 years, Joel Greenblatt returned -91.3% compared to 254.2% for the S&P 500 — underperformed the S&P 500 by 345.5%.
17.6%
S&P 500: 22.2%
52.7%
S&P 500: 72.8%
-95.4%
S&P 500: 75.7%
-91.3%
S&P 500: 254.2%