The 10 best days in the history of S&P 500 are as follows. March 15, 1933: +16.6 %🟢 🥈 October 30, 1929: +12.5%🟢 🥉 October 6, 1931: +12.4 %🟢 September 4, 1932: +11.8 %🟢 October 5, 2008: +11.6 %🟢 October 6, 2008: +10.8 %🟢 September 7, 1939: +9.6 %🟢 April 9, 2025: +9.5 %🟢 April 20, 1933: +9.5%🟢 March 24, 2020: +9.4 %🟢