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Schlumberger Seasonality

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

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

By Month

MonthAverageMedian% PositiveBestWorst
January+3.7%+1.7%63%+31.2%23.4%
February+1.4%+2.1%60%+25.7%19.2%
March0.0%+0.1%52%+23.9%50.2%
April+3.9%+4.7%69%+24.7%20.5%
May+0.1%0.5%43%+17.8%21.4%
June0.1%+0.9%52%+14.7%22.2%
July+2.6%+2.0%64%+22.2%16.4%
August0.7%0.2%49%+18.3%27.7%
September1.5%1.8%34%+16.1%23.5%
October+0.1%2.8%44%+44.9%33.9%
November0.1%0.1%49%+39.2%18.6%
December+0.6%+1.9%54%+28.9%20.0%

By Calendar Year

YearReturn
2025+0.1%
202426.3%
20232.7%
2022+78.5%
2021+37.2%
202045.7%
2019+11.4%
201846.5%
201719.7%
2016+20.4%
201518.3%
20145.2%
2013+30.0%
2012+1.4%
201118.2%
2010+28.3%
2009+53.8%
200857.0%
2007+55.7%
2006+30.0%
2005+45.1%
2004+22.4%
2003+30.0%
200223.4%
200131.3%
2000+42.4%
1999+21.0%
199842.4%
1997+61.2%
1996+44.2%
1995+37.5%
199414.8%
1993+3.3%
19928.2%
1991+7.8%
1990+17.8%
1989+50.6%
1988+13.5%
19879.4%
198613.0%
19858.7%

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