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Atlassian Seasonality

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

Based on 11 calendar years of monthly closes, starting 2016.

By Month

MonthAverageMedian% PositiveBestWorst
January+4.4%+10.6%64%+26.0%31.0%
February3.3%+0.6%55%+14.4%36.4%
March3.8%3.9%36%+5.8%25.3%
April0.5%+0.5%55%+15.1%23.5%
May+7.9%+3.7%55%+56.9%21.1%
June+0.3%1.6%45%+14.8%27.7%
July+9.9%+8.4%73%+29.9%5.6%
August+12.2%+5.3%58%+88.5%7.3%
September2.9%2.7%30%+6.8%15.0%
October+3.6%+0.9%50%+37.6%21.0%
November+1.4%+3.1%60%+39.8%35.1%
December+1.3%0.4%50%+24.6%11.3%

By Calendar Year

YearReturn
202533.4%
2024+2.3%
2023+84.8%
202266.3%
2021+63.0%
2020+94.3%
2019+35.2%
2018+95.5%
2017+89.0%
201619.9%

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