Over the past 10 years, Carl Icahn returned -52.4% compared to 255.5% for the S&P 500 — underperformed the S&P 500 by 307.9%.
8.0%
S&P 500: 19.7%
-34.3%
S&P 500: 76.9%
-64.0%
S&P 500: 72.4%
-52.4%
S&P 500: 255.5%