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Berkshire Hathaway Seasonality

Historical month-by-month and year-by-year returns

Based on 31 calendar years of monthly closes, starting 1996.

By Month

MonthAverageMedian% PositiveBestWorst
January+0.4%+0.4%53%+16.3%10.1%
February+1.4%+2.8%67%+10.9%14.2%
March+2.1%+1.6%57%+26.4%11.4%
April+1.4%+1.1%57%+9.1%8.5%
May0.4%0.3%43%+13.7%8.9%
June0.2%0.9%39%+13.0%13.6%
July+1.0%+0.1%52%+10.1%10.4%
August+1.2%+1.7%59%+11.4%14.3%
September+0.5%+0.3%50%+12.6%7.3%
October+1.6%+1.2%57%+12.6%12.6%
November+2.7%+3.0%77%+13.4%10.8%
December+0.7%+0.9%63%+8.3%8.1%

By Calendar Year

YearReturn
2025+10.9%
2024+27.1%
2023+15.5%
2022+3.3%
2021+29.0%
2020+2.4%
2019+10.9%
2018+3.0%
2017+21.6%
2016+23.4%
201512.1%
2014+26.6%
2013+32.2%
2012+17.6%
20114.8%
2010+21.9%
2009+2.2%
200832.1%
2007+29.2%
2006+24.9%
20050.0%
2004+4.3%
2003+16.2%
20024.0%
2001+7.3%
2000+28.6%
199922.1%
1998+52.7%
1997+38.4%

These are historical patterns, not a forecast — past calendar-month performance does not predict future returns.