Over the past 10 years, Bill Ackman returned 146.7% compared to 259.8% for the S&P 500 — underperformed the S&P 500 by 113.1%.
-6.9%
S&P 500: 18.0%
8.6%
S&P 500: 72.0%
7.2%
S&P 500: 69.8%
146.7%
S&P 500: 259.8%