Arthur J. Gallagher & Co. (AJG)
S&P 500 · Financials · data since 1984-06-20 · last close 2026-09-09
Arthur J. Gallagher & Co. (AJG) monthly returns (%)
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | -3.6 | -8.5 | -4.8 | -4.7 | -2.6 | 14.2 | 8.7 | 4.8 | -6.6 | · | · | · |
| 2025 | 6.3 | 11.9 | 2.4 | -7.1 | 8.3 | -7.7 | -10.3 | 5.4 | 2.5 | -19.4 | -0.8 | 4.8 |
| 2024 | 3.2 | 5.3 | 2.5 | -6.1 | 7.9 | 2.6 | 9.3 | 3.2 | -3.6 | -0.1 | 11.0 | -8.9 |
| 2023 | 3.8 | -4.3 | 2.4 | 8.8 | -3.7 | 9.9 | -2.2 | 7.6 | -1.1 | 3.3 | 6.0 | -9.7 |
| 2022 | -6.9 | 0.2 | 10.7 | -3.5 | -3.9 | 1.0 | 9.8 | 1.4 | -5.4 | 9.3 | 6.4 | -5.1 |
| 2021 | -6.7 | 3.8 | 4.6 | 16.2 | 1.1 | -4.1 | -0.6 | 3.1 | 3.9 | 12.8 | -2.8 | 4.5 |
| 2020 | 7.7 | -5.0 | -16.0 | -3.7 | 20.1 | 3.9 | 10.3 | -2.0 | 0.7 | -1.8 | 11.3 | 7.6 |
| 2019 | 1.4 | 8.0 | -2.7 | 7.1 | 0.7 | 4.5 | 3.2 | 0.3 | -0.8 | 1.8 | 2.3 | 2.6 |
| 2018 | 8.0 | 1.2 | 0.0 | 1.8 | -4.7 | -1.5 | 9.3 | 1.1 | 3.8 | -0.6 | 4.1 | -3.9 |
| 2017 | 3.6 | 5.8 | -0.0 | -1.3 | 2.4 | 0.9 | 2.7 | -0.8 | 6.3 | 2.9 | 4.6 | -3.9 |
| 2016 | -8.1 | 5.9 | 12.7 | 3.5 | 5.0 | -0.7 | 3.3 | 1.2 | 3.0 | -5.2 | 5.2 | 3.2 |
| 2015 | -5.6 | 5.8 | 0.3 | 2.3 | 1.3 | -1.6 | 0.3 | -7.8 | -4.8 | 5.9 | 0.1 | -5.6 |
| 2014 | -1.5 | 0.7 | 3.0 | -5.4 | 1.8 | 2.5 | -3.4 | 5.0 | -3.2 | 5.2 | 0.5 | -1.1 |
| 2013 | 6.6 | 5.1 | 7.3 | 2.8 | 3.7 | 0.0 | 1.6 | -6.1 | 5.6 | 8.7 | -1.9 | 1.6 |
| 2012 | -0.3 | 2.3 | 5.8 | 5.1 | -7.5 | 1.9 | 1.2 | 0.7 | 1.2 | -1.1 | 4.0 | -5.1 |
| 2011 | 2.1 | 5.8 | -2.1 | -2.1 | -3.6 | 0.6 | -1.5 | 0.3 | -5.6 | 17.5 | 0.3 | 9.0 |
| 2010 | 0.2 | 5.2 | 4.8 | 7.0 | -6.0 | -0.0 | 4.3 | -2.2 | 7.4 | 6.8 | -0.3 | 4.7 |
| 2009 | -9.0 | -32.7 | 9.0 | 32.2 | -6.8 | 3.4 | 7.3 | 3.8 | 3.9 | -8.4 | 0.4 | 1.9 |
| 2008 | 5.0 | -7.0 | 1.4 | 4.0 | 3.9 | -4.4 | 5.5 | 4.1 | -1.9 | -5.1 | 1.8 | 5.8 |
| 2007 | -3.0 | -0.1 | 0.0 | -1.3 | 5.2 | -4.1 | -1.1 | 7.1 | -0.8 | -8.2 | -1.2 | -6.8 |
| 2006 | -5.6 | 1.1 | -4.7 | -1.3 | -3.1 | -3.5 | 7.2 | -1.4 | 0.6 | 4.4 | 5.2 | 1.9 |
| 2005 | -8.8 | 0.7 | -2.6 | -3.3 | -0.8 | -0.7 | 2.8 | 2.4 | 1.8 | 2.1 | 3.5 | 2.3 |
| 2004 | -3.7 | 7.6 | -2.4 | -1.0 | -1.2 | -3.6 | 1.7 | 2.9 | 4.8 | -15.2 | 9.1 | 6.9 |
| 2003 | -14.1 | -3.1 | 1.1 | 1.8 | 9.0 | 0.5 | -2.5 | 1.8 | 5.4 | 3.2 | 7.2 | 4.4 |
| 2002 | -4.3 | 5.6 | -5.6 | 10.2 | -2.4 | -1.3 | -15.1 | -1.5 | -14.4 | 8.8 | 5.0 | 4.8 |
| 2001 | -18.7 | -1.3 | 9.0 | -8.9 | 9.0 | -5.0 | 5.8 | -3.6 | 28.2 | 8.0 | -0.1 | -5.2 |
| 2000 | -17.0 | -4.9 | 28.1 | 14.6 | 3.9 | 9.2 | 16.8 | -0.1 | 21.2 | 6.8 | -6.5 | 8.2 |
| 1999 | 13.3 | -4.5 | -2.8 | 3.3 | 2.5 | 2.5 | 5.3 | 4.8 | -1.8 | -2.8 | 5.3 | 19.6 |
| 1998 | 7.4 | 11.7 | 5.7 | 1.3 | -1.7 | 4.6 | -12.4 | -5.6 | 12.4 | 2.7 | 9.4 | -4.1 |
| 1997 | -2.8 | 2.1 | 8.0 | -4.9 | 1.6 | 20.0 | -4.0 | -1.4 | 5.1 | -6.0 | 2.1 | -2.8 |
| 1996 | 0.0 | 5.0 | -6.3 | -10.7 | -1.1 | 0.5 | -1.6 | 7.9 | 2.0 | -14.6 | 4.7 | 1.8 |
| 1995 | 6.6 | 2.6 | 1.8 | -3.2 | 1.8 | 5.0 | 3.4 | -2.3 | -2.7 | -0.3 | -7.4 | 14.5 |
| 1994 | -14.5 | -2.4 | -5.1 | 11.4 | 1.2 | -2.8 | 2.0 | 3.6 | 1.1 | -0.4 | -4.2 | 2.7 |
| 1993 | -0.9 | 19.6 | 6.5 | -5.6 | -0.4 | -0.9 | -4.2 | 0.0 | 2.2 | 15.6 | -7.4 | 6.4 |
| 1992 | 4.5 | 3.2 | 0.6 | -9.3 | 6.3 | -5.2 | 10.9 | 8.3 | 7.4 | -1.3 | 0.0 | 2.9 |
| 1991 | -2.7 | 12.7 | 10.4 | -10.7 | -11.5 | 5.3 | -13.0 | -0.6 | -1.1 | 4.5 | 7.3 | 2.4 |
| 1990 | -10.2 | 3.4 | 2.3 | -7.5 | 4.1 | 3.5 | -0.5 | -11.5 | 3.2 | -0.6 | 17.0 | -3.0 |
| 1989 | 5.2 | 3.5 | -1.3 | 9.8 | 0.0 | 2.6 | 15.0 | -2.7 | 3.4 | 2.7 | 6.3 | -1.5 |
| 1988 | -11.5 | -4.1 | -1.7 | 3.5 | 11.7 | 9.7 | -6.1 | 0.7 | -0.7 | -1.4 | 3.7 | -4.3 |
| 1987 | 2.9 | 3.7 | -13.4 | -18.6 | 6.3 | -1.8 | 3.0 | 0.6 | -1.8 | -16.7 | -5.7 | 5.3 |
| 1986 | 9.8 | 6.1 | -3.1 | -6.4 | 1.0 | -1.5 | 6.4 | 7.4 | 1.7 | 2.5 | -3.3 | -10.3 |
| 1985 | 12.6 | 9.7 | 0.0 | 12.9 | 5.4 | -6.3 | -4.9 | -1.9 | -9.8 | 20.3 | 13.9 | 2.1 |
| 1984 | · | · | · | · | · | -1.7 | 12.1 | 30.8 | 14.1 | 7.2 | 4.8 | 9.2 |
| Avg | -1.2 | 2.1 | 1.6 | 0.8 | 1.5 | 1.2 | 2.0 | 1.6 | 2.0 | 1.3 | 2.9 | 1.4 |
Values in %. Current and first-listed months are partial (greyed).
returnsview.com
AJG seasonality — average by calendar month
Arthur J. Gallagher & Co. has monthly history back to 1984. Its strongest month by median is November — positive in 29 of 42 years, median +3.6%, and higher in 7 of the last 9. April is the soft spot, down in 22 of 42 with a median of -1.2%. Across its full record it has closed 59% of months higher, swings ±7.1% in an average month and has fallen 58% peak to trough.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg | -1.2% | +2.1% | +1.6% | +0.8% | +1.5% | +1.2% | +2.0% | +1.6% | +2.2% | +1.3% | +2.9% | +1.4% |
| Win rate | 45%/42 | 71%/42 | 60%/42 | 48%/42 | 60%/42 | 53%/43 | 63%/43 | 60%/43 | 62%/42 | 55%/42 | 69%/42 | 62%/42 |
Win rate = share of positive months / sample size.
AJG risk & extremes
AJG drawdown & rolling returns
Percent below the all-time high at each month-end — how far underwater the asset was.
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Frequently asked questions
What was Arthur J. Gallagher & Co.'s best month?+
Arthur J. Gallagher & Co.'s strongest completed month on record is April 2009, at +32.24%.
What was Arthur J. Gallagher & Co.'s worst month?+
Its weakest completed month on record is February 2009, at -32.67%.
Is Arthur J. Gallagher & Co. up this year?+
Arthur J. Gallagher & Co. is down 5.32% year to date, measured from its last close before 1 January.
What is Arthur J. Gallagher & Co.'s 1-year return?+
-17.70% over the past twelve months, comparing the latest close with the most recent close on or before the same date a year earlier.
What is Arthur J. Gallagher & Co.'s biggest drawdown?+
The deepest peak-to-trough fall on record is 58.0%, measured on month-end closes since 1984.
Which calendar month is historically best for Arthur J. Gallagher & Co.?+
November has the highest average return across every completed November since 1984. An average is not a forecast.
About Arthur J. Gallagher & Co.
Arthur J. Gallagher & Co. is an S&P 500 company, a financials business worth about $63 billion. It has survived more market cycles than most coins have months — with price receipts on this site going back to 1984. And the long game: $100 at its first close here (1984) would be about $42,501 today.
Did you know?
- Its best month on record was April 2009 at +32.24%; its worst, February 2009 at -32.67%.
- It has closed February in the green 30 out of 42 times — past performance, future shrug.
Trivia for entertainment — the numbers come from our price data; the jokes don't.