Over the past 10 years, Carl Icahn returned -56.1% compared to 250.7% for the S&P 500 — underperformed the S&P 500 by 306.8%.
6.1%
S&P 500: 21.9%
-53.6%
S&P 500: 68.9%
-66.0%
S&P 500: 71.7%
-56.1%
S&P 500: 250.7%