Over the past 10 years, Bill Ackman returned 162.7% compared to 241.9% for the S&P 500 — underperformed the S&P 500 by 79.2%.
-2.7%
S&P 500: 16.0%
6.2%
S&P 500: 62.3%
13.4%
S&P 500: 67.6%
162.7%
S&P 500: 241.9%