Over the past 10 years, Jeremy Grantham returned 320.9% compared to 260.9% for the S&P 500 — outperformed the S&P 500 by 60.0%.
18.4%
S&P 500: 16.2%
47.8%
S&P 500: 71.2%
36.4%
S&P 500: 71.1%
320.9%
S&P 500: 260.9%