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KOSPI 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+0.3%+0.4%53%+19.5%12.2%
February+0.4%+0.5%57%+19.0%19.1%
March+3.2%+2.9%63%+30.6%15.7%
April+0.7%+1.2%53%+28.4%20.1%
May+0.6%0.1%50%+20.0%13.2%
June+0.9%+1.5%60%+15.3%22.2%
July0.9%0.7%43%+9.3%11.9%
August1.2%+0.1%55%+12.7%12.8%
September0.4%0.3%45%+24.0%27.2%
October+2.9%+0.8%59%+19.7%13.4%
November+2.1%+2.0%59%+24.5%13.4%
December+3.3%+1.9%63%+50.8%14.4%

By Calendar Year

YearReturn
2025+107.5%
2024+0.8%
2023+3.0%
20228.9%
202110.5%
2020+40.5%
20193.9%
201814.1%
2017+24.1%
2016+8.1%
20151.9%
2014+0.4%
20131.1%
2012+0.3%
20115.5%
2010+29.2%
2009+37.9%
200828.5%
2007+19.4%
20062.8%
2005+50.1%
2004+9.9%
2003+43.4%
200220.9%
2001+21.1%
200034.5%
1999+65.2%
1998+0.7%
199717.3%

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