Aon plc (AON)
S&P 500 · Financials · data since 1980-06-02 · last close 2026-07-24
1d
+1.66%
7d
-1.50%
30d
+11.13%
YTD
+2.77%
1y
+1.91%
Aon plc (AON) monthly returns (%)
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | -0.9 | -4.0 | -3.8 | -3.5 | 1.7 | 5.0 | 9.1 | · | · | · | · | · |
| 2025 | 3.3 | 10.5 | -2.5 | -11.1 | 5.1 | -4.1 | -0.3 | 3.4 | -2.8 | -4.5 | 3.9 | -0.3 |
| 2024 | 2.8 | 5.9 | 5.6 | -15.3 | -0.1 | 4.2 | 11.9 | 4.8 | 0.7 | 6.0 | 6.9 | -8.3 |
| 2023 | 6.4 | -4.6 | 3.7 | 3.3 | -5.2 | 12.0 | -7.6 | 4.7 | -2.8 | -4.4 | 6.2 | -11.4 |
| 2022 | -7.8 | 5.7 | 11.5 | -11.4 | -4.3 | -2.2 | 8.1 | -4.0 | -4.1 | 5.3 | 9.5 | -2.6 |
| 2021 | -3.6 | 12.1 | 1.1 | 9.5 | 0.8 | -5.8 | 9.1 | 10.3 | -0.4 | 12.1 | -7.5 | 1.6 |
| 2020 | 6.0 | -5.6 | -20.6 | 4.9 | 14.1 | -2.2 | 6.8 | -2.5 | 3.2 | -10.6 | 11.3 | 3.1 |
| 2019 | 7.8 | 9.8 | -0.5 | 5.8 | -0.0 | 7.2 | -1.7 | 3.0 | -0.7 | 0.0 | 5.4 | 2.3 |
| 2018 | 6.4 | -1.3 | 0.0 | 1.8 | -1.8 | -1.9 | 4.9 | 1.7 | 5.7 | 1.8 | 5.7 | -12.0 |
| 2017 | 1.3 | 2.6 | 2.6 | 1.3 | 9.2 | 1.6 | 4.2 | 0.7 | 5.0 | -1.6 | -2.2 | -4.4 |
| 2016 | -4.4 | 8.5 | 9.6 | 1.0 | 4.0 | -0.0 | -1.7 | 4.0 | 1.0 | -1.2 | 3.0 | -2.3 |
| 2015 | -4.8 | 11.4 | -4.2 | 0.4 | 5.2 | -1.5 | 1.4 | -7.3 | -5.2 | 5.6 | 1.5 | -2.7 |
| 2014 | -3.9 | 6.4 | -1.5 | 1.0 | 6.0 | 0.2 | -6.1 | 3.3 | 0.6 | -1.6 | 7.5 | 2.5 |
| 2013 | 4.1 | 5.8 | 0.7 | -1.6 | 5.5 | 1.1 | 5.2 | -1.7 | 12.1 | 6.5 | 3.2 | 2.8 |
| 2012 | 3.8 | -3.4 | 4.8 | 5.9 | -10.2 | 0.6 | 5.5 | 5.6 | 0.6 | 3.5 | 5.3 | -2.1 |
| 2011 | -0.3 | 15.1 | 0.6 | -1.2 | -0.0 | -1.6 | -5.9 | -2.9 | -10.2 | 11.4 | -1.4 | 1.8 |
| 2010 | 1.9 | 5.2 | 4.3 | -0.2 | -7.0 | -6.0 | 1.9 | -3.8 | 7.9 | 2.0 | 0.9 | 14.7 |
| 2009 | -18.6 | 3.2 | 6.8 | 3.8 | -14.7 | 5.2 | 4.6 | 5.9 | -2.6 | -5.0 | 0.6 | -1.0 |
| 2008 | -8.8 | -4.0 | -3.4 | 13.3 | 4.0 | -2.6 | 0.0 | 3.7 | -5.3 | -5.5 | 7.1 | 0.8 |
| 2007 | 1.9 | 5.0 | 0.8 | 2.5 | 10.8 | -0.7 | -5.7 | 8.2 | 3.4 | 1.5 | 10.3 | -4.6 |
| 2006 | -4.4 | 15.8 | 4.8 | 1.3 | -14.9 | -2.3 | -1.3 | 1.0 | -2.0 | 3.2 | 2.6 | -0.9 |
| 2005 | -4.7 | 8.5 | -6.8 | -8.1 | 19.6 | 0.4 | 2.2 | 17.6 | 7.2 | 6.0 | 7.6 | -1.3 |
| 2004 | 2.6 | 7.4 | 6.4 | -6.1 | 6.0 | 3.0 | -6.6 | -1.9 | 10.8 | -28.5 | 3.5 | 13.0 |
| 2003 | 0.2 | 3.6 | 6.3 | 7.9 | 15.8 | -6.2 | -0.1 | -7.1 | -6.1 | 5.8 | 0.2 | 9.1 |
| 2002 | -6.3 | 4.7 | 1.1 | 2.7 | -6.4 | -11.8 | -18.7 | -16.8 | 3.7 | -10.5 | 0.3 | 3.6 |
| 2001 | 2.6 | -1.9 | 3.6 | -6.4 | 6.0 | 0.0 | 1.9 | 4.8 | 13.1 | -8.9 | -5.8 | -0.9 |
| 2000 | -35.3 | -18.0 | 53.1 | -15.4 | 29.8 | -11.6 | 16.6 | 3.3 | 5.5 | 6.1 | -25.0 | 10.3 |
| 1999 | -8.3 | 16.8 | 7.3 | 8.8 | -5.8 | -4.1 | -8.7 | -10.8 | -11.4 | 20.8 | 0.5 | 12.1 |
| 1998 | -4.8 | 7.7 | 8.3 | -0.4 | -0.3 | 9.7 | -3.2 | -7.7 | 3.2 | -3.4 | -7.1 | -3.9 |
| 1997 | 4.0 | -1.4 | -3.4 | 9.2 | 10.0 | 6.2 | 8.2 | -8.6 | 3.6 | 2.8 | -2.0 | 10.9 |
| 1996 | 9.0 | -3.8 | -0.5 | 4.3 | -6.1 | 0.7 | -3.5 | 3.9 | 7.4 | 7.2 | 5.4 | 2.0 |
| 1995 | 2.7 | 6.7 | 5.0 | 1.9 | -1.0 | 2.0 | 2.9 | 2.6 | 4.8 | 1.4 | 14.6 | 5.8 |
| 1994 | 1.3 | 2.7 | -3.8 | -2.9 | 7.7 | 2.3 | -0.9 | 3.0 | -2.5 | -5.8 | 1.6 | 1.2 |
| 1993 | -5.0 | 0.7 | 10.2 | -8.5 | 1.7 | 1.9 | 2.7 | 2.5 | 0.5 | -5.9 | -4.8 | -2.3 |
| 1992 | 6.7 | 2.1 | -4.4 | 9.3 | -3.4 | 7.3 | 2.3 | -3.5 | 8.4 | 1.6 | 2.8 | 7.2 |
| 1991 | -4.7 | 6.1 | 6.1 | 0.0 | 12.1 | -7.7 | 2.0 | -0.7 | -2.3 | 2.8 | -2.0 | 7.5 |
| 1990 | -12.1 | 1.6 | 0.3 | -7.0 | 13.8 | -4.5 | -2.3 | -3.4 | -12.1 | 3.7 | 9.5 | 0.7 |
| 1989 | 1.8 | 0.7 | 5.3 | 7.1 | 7.4 | 6.6 | 0.3 | -3.2 | -1.8 | 4.4 | 9.8 | 8.7 |
| 1988 | 1.4 | 14.2 | -4.3 | 1.8 | -1.0 | 6.0 | 3.8 | 1.2 | -0.5 | 5.5 | -3.3 | 1.8 |
| 1987 | 11.0 | -1.7 | -6.1 | -7.2 | -2.0 | 4.6 | 6.8 | 7.3 | -4.2 | -18.1 | 1.1 | -2.1 |
| 1986 | 2.9 | 12.6 | 4.7 | -4.8 | -1.1 | 2.3 | -9.7 | 7.7 | -7.7 | 3.1 | -1.8 | -4.0 |
| 1985 | 5.9 | 9.0 | -0.4 | 1.3 | 7.6 | 1.2 | -2.2 | -6.1 | -6.5 | 7.5 | 14.0 | 1.7 |
| 1984 | -14.0 | -4.8 | -2.3 | 8.0 | -12.6 | 2.1 | -5.3 | 20.1 | 6.0 | 6.7 | -5.9 | 6.6 |
| 1983 | 6.8 | 6.5 | 5.3 | 6.9 | -1.8 | -0.4 | -9.0 | 12.9 | 5.5 | 1.4 | 8.4 | 3.9 |
| 1982 | -5.7 | -10.5 | 4.3 | -1.8 | 2.4 | -13.5 | 13.6 | 4.2 | 0.0 | 20.1 | 6.2 | -0.5 |
| 1981 | 0.0 | -0.7 | 22.9 | -2.9 | 0.6 | 1.2 | -0.6 | -4.1 | 2.5 | 2.4 | 7.1 | 5.5 |
| 1980 | · | · | · | · | · | 5.5 | 2.6 | -1.9 | -0.7 | -3.9 | -4.1 | 0.0 |
| Avg | -1.2 | 3.7 | 3.0 | 0.2 | 2.3 | 0.2 | 0.8 | 1.2 | 0.7 | 1.1 | 2.4 | 1.6 |
Values in %. Current and first-listed months are partial (greyed).
returnsview.com
Seasonality — average by calendar month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg | -1.2% | +3.7% | +3.0% | +0.2% | +2.3% | +0.2% | +0.6% | +1.2% | +0.7% | +1.1% | +2.4% | +1.6% |
| Win rate | 54%/46 | 70%/46 | 65%/46 | 57%/46 | 54%/46 | 55%/47 | 54%/46 | 59%/46 | 52%/46 | 65%/46 | 72%/46 | 57%/46 |
Win rate = share of positive months / sample size.
Risk & extremes
Max drawdown
-67.4%
Worst peak-to-trough fall on record
Monthly volatility
±7.4%
Std. dev. of monthly returns
Positive months
59%
Share of completed months in the green
Best month
+53.12%
2000-03
Worst month
-35.31%
2000-01
Longest streaks
9▲ / 7▼
Consecutive up / down months
Drawdown & rolling returns
Percent below the all-time high at each month-end — how far underwater the asset was.
About Aon plc
Aon plc has survived more market cycles than most coins have months — with price receipts on this site going back to 1980. And the long game: $100 at its first close here (1980) would be about $29,180 today.
Did you know?
- Its best month on record was March 2000 at +53.12%; its worst, January 2000 at -35.31%.
- It has closed November in the green 33 out of 46 times — past performance, future shrug.
Trivia for entertainment — the numbers come from our price data; the jokes don't.