Over the past 10 years, Carl Icahn returned -49.7% compared to 257.4% for the S&P 500 — underperformed the S&P 500 by 307.1%.
9.2%
S&P 500: 15.0%
-23.0%
S&P 500: 81.3%
-61.9%
S&P 500: 79.5%
-49.7%
S&P 500: 257.4%