s and p 500 monthly returns past 10 yrs

The S&P 500 (GSPC) had its best month between August 15, 2015 and August 15, 2025 when the return was >= 10% in April 2020, returning 16.6%.

ASSET MONTH % RETURN
the S&P 500 (GSPC)
April 2020
16.59%