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ADP Seasonality

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

Based on 42 calendar years of monthly closes, starting 1985.

By Month

MonthAverageMedian% PositiveBestWorst
January1.0%2.5%39%+26.2%16.4%
February+0.5%+1.8%55%+9.4%13.2%
March+1.5%+1.6%55%+11.5%11.7%
April+0.7%0.1%50%+11.5%12.8%
May+1.7%+1.2%60%+14.4%7.4%
June0.6%0.8%43%+14.7%16.1%
July+1.2%+1.3%62%+19.0%14.4%
August+1.4%+1.4%58%+20.3%10.5%
September+0.7%+0.4%59%+17.3%15.1%
October+3.6%+4.4%78%+22.3%18.2%
November+3.1%+2.9%71%+17.5%9.1%
December+1.2%+0.8%59%+23.0%11.1%

By Calendar Year

YearReturn
202512.1%
2024+25.7%
20232.5%
20223.1%
2021+39.9%
2020+3.3%
2019+30.0%
2018+11.9%
2017+14.0%
2016+21.3%
2015+1.6%
2014+17.5%
2013+41.9%
2012+5.4%
2011+16.7%
2010+8.1%
2009+8.8%
200811.7%
2007+0.1%
2006+7.3%
2005+3.5%
2004+12.0%
2003+0.9%
200233.4%
20017.0%
2000+17.5%
1999+34.4%
1998+30.7%
1997+43.1%
1996+15.5%
1995+26.9%
1994+5.9%
1993+4.0%
1992+16.8%
1991+69.7%
1990+9.4%
1989+26.5%
198813.6%
1987+27.3%
1986+19.5%
1985+33.7%

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