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KOSDAQ Seasonality

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

Based on 27 calendar years of monthly closes, starting 2000.

By Month

MonthAverageMedian% PositiveBestWorst
January+1.0%+1.9%58%+8.0%9.0%
February+1.0%+1.7%62%+17.8%11.8%
March+2.6%+2.3%73%+18.9%20.9%
April+0.1%+0.1%50%+11.1%11.6%
May2.3%0.9%46%+6.7%16.6%
June1.0%1.3%42%+11.8%21.4%
July0.6%0.2%50%+16.5%12.8%
August2.0%0.0%48%+13.5%21.0%
September1.0%0.5%48%+21.1%30.1%
October+1.8%+0.1%50%+21.3%9.9%
November+0.1%+0.7%50%+10.6%21.8%
December+4.6%+1.8%58%+60.4%15.6%

By Calendar Year

YearReturn
2025+57.8%
20248.9%
2023+7.9%
202215.2%
20216.0%
2020+44.6%
201910.4%
201821.5%
2017+48.3%
20169.8%
2015+15.4%
2014+14.8%
2013+2.3%
20122.0%
20111.4%
2010+5.0%
2009+36.1%
200840.1%
2007+5.6%
200616.5%
2005+45.9%
2004+7.1%
2003+1.7%
200243.9%
20018.3%

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