Over the past 10 years, PRIMECAP Management returned 320.4% compared to 253.9% for the S&P 500 — outperformed the S&P 500 by 66.5%.
42.7%
S&P 500: 14.1%
88.5%
S&P 500: 69.6%
89.2%
S&P 500: 68.3%
320.4%
S&P 500: 253.9%