Over the past 10 years, Jeremy Grantham returned 328.7% compared to 260.6% for the S&P 500 — outperformed the S&P 500 by 68.1%.
16.0%
S&P 500: 10.3%
57.7%
S&P 500: 74.7%
33.8%
S&P 500: 62.8%
328.7%
S&P 500: 260.6%