Historical annual and monthly returns for Arthur J. Gallagher & Co. (AJG).
For Arthur J. Gallagher & Co. (AJG), the strongest completed calendar year was 2013, when the stock returned 40.0%, while its weakest was 2007, with a return of -14.4%. Across the 26 completed calendar years from 2000 through 2025, its average annual return was 12.7% and its compounded annual return was 11.5%. AJG posted positive returns in 19 of those 26 years (73%). In 2025, the latest completed year, it returned -8.0%. In 2026 year to date, AJG has returned -9.9%.
Returns are calculated from the adjusted daily closing prices for Arthur J. Gallagher & Co. (AJG). 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.
