Historical annual and monthly returns for Fortinet (FTNT).
For Fortinet (FTNT), the strongest completed calendar year was 2021, when the stock returned 142.0%, while its weakest was 2022, with a return of -32.0%. Across the 16 completed calendar years from 2010 through 2025, its average annual return was 33.6% and its compounded annual return was 26.9%. FTNT posted positive returns in 11 of those 16 years (69%). In 2025, the latest completed year, it returned -15.9%. In 2026 year to date, FTNT has returned 122.0%.
Returns are calculated from the adjusted daily closing prices for Fortinet (FTNT). Annual returns measure the percentage change between the final available trading prices of consecutive calendar years. Monthly returns use the corresponding month-end observations. Adjusted prices account for stock splits and distributions when supplied by the market-data provider. Results are nominal and are not adjusted for inflation.
