NYSE · AON · stock
Aon plc (AON) stock price history
Every NYSE trading session of Aon plc from Jun 2, 1980 to Sep 28, 2026: 11,675 daily bars, adjusted for splits and dividends, with minute bars from Jul 13, 2026 forward. The full series is served by the API: a free key covers the last year, paid plans the whole history and minute bars.
AON adjusted close, 1980 to 2026
- $406.53
- All time high, 2025
- $381.47
- 52 week high, $270.00 low
- 11,675
- Daily sessions since 1980
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 1980 to 2026 series and minute bars.
AON key facts
- Aon plc (AON) closed at $272.10 on Sep 28, 2026 on NYSE.
- AON's all time high close is $406.53, set on Mar 3, 2025; its all time low close is $0.9955 on Feb 20, 1981.
- AON's 52 week range is $270.00 to $381.47.
- AON returned -23.4% over the year to Sep 28, 2026 and -2.7% over five years.
- Over ten years AON returned +164%, +10.2% a year compounded.
- AON's deepest drawdown was -67.4% from Jul 6, 1998 to Aug 8, 2002.
- DataCedar holds 11,675 daily sessions of AON history from Jun 2, 1980 and minute bars from Jul 13, 2026, adjusted for splits and dividends, served by the API under a key.
AON price chart, 1980 to 2026
AON returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -23.4% |
| 3 months | -17.2% |
| 6 months | -13.0% |
| Year to date | -23.5% |
| 1 year | -23.4% |
| 3 years | -15.8% |
| 5 years | -2.7% |
| 10 years | +164.2% |
| Since Jun 2, 1980 | +25,159% |
| Compound annual growth, 46.3 years | +12.7% |
AON records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- $406.53 on Mar 3, 2025
- All time low close
- $0.9955 on Feb 20, 1981
- 52 week high
- $381.47 on Jul 28, 2026
- 52 week low
- $270.00 on Sep 28, 2026
- Deepest drawdown
- -67.4% from Jul 6, 1998 to Aug 8, 2002, recovered Mar 15, 2006
- Best single session
- +22.1% on Aug 14, 2002
- Worst single session
- -30.3% on Aug 7, 2002
- Volatility, 1 year annualised
- 28.0%
- Sessions closing higher, 1 year
- 46%
- Growth of 1 since 1980
- 253×
- Best calendar year
- 1995, +62%
- Worst calendar year
- 2002, -45%
AON price history by year
Open is the first session's open, high and low span the year, close is the last session's close, and the return is close over the previous year's close. 1980 starts on Jun 2, 1980; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | $350.20 | $381.47 | $270.00 | $272.10 | -22.7% | 280.2M | 185 |
| 2025 | $357.43 | $410.16 | $321.53 | $351.95 | -1.2% | 314.5M | 250 |
| 2024 | $286.52 | $391.92 | $264.08 | $356.06 | +24.5% | 289.9M | 252 |
| 2023 | $293.75 | $340.17 | $274.56 | $286.11 | -2.3% | 212.3M | 250 |
| 2022 | $290.71 | $331.82 | $239.31 | $292.86 | +0.6% | 247.8M | 251 |
| 2021 | $202.78 | $315.96 | $192.79 | $291.08 | +43.4% | 421.1M | 252 |
| 2020 | $199.17 | $227.23 | $137.31 | $203.00 | +2.4% | 387.3M | 253 |
| 2019 | $135.39 | $202.46 | $133.55 | $198.31 | +44.7% | 227.4M | 252 |
| 2018 | $124.90 | $157.05 | $121.76 | $137.07 | +9.9% | 253.1M | 251 |
| 2017 | $103.14 | $141.79 | $101.34 | $124.67 | +21.5% | 273.6M | 251 |
| 2016 | $82.41 | $107.28 | $76.16 | $102.62 | +22.5% | 286.1M | 252 |
| 2015 | $85.73 | $96.39 | $78.23 | $83.77 | -1.6% | 307.7M | 252 |
| 2014 | $74.01 | $88.07 | $68.06 | $85.13 | +14.3% | 364.3M | 252 |
| 2013 | $49.42 | $74.87 | $48.14 | $74.48 | +52.5% | 449.4M | 252 |
| 2012 | $41.22 | $50.88 | $39.33 | $48.85 | +20.3% | 475M | 250 |
| 2011 | $39.66 | $46.95 | $34.33 | $40.61 | +3.0% | 607.7M | 252 |
| 2010 | $32.47 | $39.64 | $29.86 | $39.45 | +21.8% | 631.8M | 252 |
| 2009 | $38.43 | $38.43 | $29.18 | $32.38 | -14.8% | 810M | 252 |
| 2008 | $39.03 | $41.43 | $27.20 | $38.00 | -2.9% | 740M | 253 |
| 2007 | $28.53 | $42.10 | $27.72 | $39.12 | +37.0% | 474.3M | 251 |
| 2006 | $28.63 | $34.26 | $24.95 | $28.56 | -0.1% | 439.2M | 251 |
| 2005 | $18.70 | $29.52 | $16.24 | $28.58 | +54.3% | 390.1M | 252 |
| 2004 | $18.22 | $22.69 | $13.99 | $18.51 | +2.1% | 392.8M | 252 |
| 2003 | $14.06 | $20.02 | $12.92 | $18.13 | +30.4% | 338.9M | 252 |
| 2002 | $25.49 | $28.48 | $9.71 | $13.91 | -45.1% | 392.7M | 252 |
| 2001 | $23.83 | $31.79 | $20.83 | $25.34 | +6.3% | 271.1M | 248 |
| 2000 | $26.66 | $29.32 | $14.11 | $23.83 | -12.0% | 308.2M | 252 |
| 1999 | $24.43 | $31.24 | $17.54 | $27.08 | +10.7% | 166.2M | 252 |
| 1998 | $25.23 | $33.09 | $21.22 | $24.46 | -3.9% | 112.9M | 252 |
| 1997 | $17.63 | $25.55 | $17.16 | $25.44 | +44.6% | 84.5M | 253 |
| 1996 | $13.51 | $18.34 | $13.30 | $17.60 | +28.0% | 107.1M | 254 |
| 1995 | $8.48 | $14.03 | $8.35 | $13.75 | +61.6% | 69.9M | 252 |
| 1994 | $8.23 | $9.42 | $7.67 | $8.51 | +3.2% | 56.4M | 252 |
| 1993 | $8.88 | $9.89 | $7.89 | $8.25 | -7.3% | 58.6M | 253 |
| 1992 | $6.28 | $8.90 | $6.22 | $8.90 | +41.4% | 60.4M | 254 |
| 1991 | $5.31 | $6.50 | $4.53 | $6.30 | +19.1% | 53.4M | 253 |
| 1990 | $6.19 | $6.21 | $4.02 | $5.29 | -14.1% | 49.5M | 253 |
| 1989 | $3.88 | $6.30 | $3.77 | $6.16 | +57.4% | 58.5M | 252 |
| 1988 | $3.06 | $4.00 | $2.95 | $3.91 | +28.7% | 51.8M | 253 |
| 1987 | $3.51 | $4.19 | $2.72 | $3.04 | -13.4% | 99.3M | 253 |
| 1986 | $3.43 | $4.36 | $3.39 | $3.51 | +2.1% | 76.8M | 253 |
| 1985 | $2.53 | $3.49 | $2.51 | $3.44 | +35.7% | 76M | 252 |
| 1984 | $2.55 | $2.75 | $1.78 | $2.53 | -0.5% | 76.9M | 253 |
| 1983 | $1.64 | $2.69 | $1.59 | $2.55 | +55.1% | 85.5M | 253 |
| 1982 | $1.43 | $1.78 | $1.04 | $1.64 | +15.1% | 91.3M | 253 |
| 1981 | $1.05 | $1.45 | $0.9955 | $1.43 | +36.2% | 44.2M | 253 |
| 1980 | $1.08 | $1.23 | $0.9806 | $1.05 | n/a | 26.9M | 148 |
AON monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | $272.10 | -15.4% |
| August 2026 | $321.52 | -10.6% |
| July 2026 | $359.73 | +8.5% |
| June 2026 | $331.69 | +4.9% |
| May 2026 | $316.06 | +1.7% |
| April 2026 | $310.83 | -3.4% |
| March 2026 | $321.93 | -3.8% |
| February 2026 | $334.59 | -4.1% |
| January 2026 | $348.72 | -0.9% |
| December 2025 | $351.95 | -0.3% |
| November 2025 | $352.99 | +3.9% |
| October 2025 | $339.78 | -4.5% |
About the AON data
Daily bars. 11,675 sessions from Jun 2, 1980 to Sep 28, 2026, one row per NYSE trading day with open, high, low, close and volume. Prices are adjusted for splits and cash dividends so the series is comparable across its whole length; the API also serves the raw, split only and dividend only views.
Minute bars. Stored from Jul 13, 2026 forward, most recent session Sep 28, 2026. Minute history is captured from the day collection began and is never backfilled, so this start date is exact. Five minute, fifteen minute and hourly bars are derived from these minutes.
Time and currency. Session dates are NYSE trading days; minute timestamps are UTC. Prices are in USD. Volume is shares traded on the session.
Get the data. The REST endpoint returns the daily series as JSON with pagination; a free key serves the last year, Quant and above the full history back to Jun 2, 1980, and minute bars come with the paid windows. It takes timeframe (1Min, 5Min, 15Min, 1Hour, 1Day), adjustment, start and end. See the bars endpoint and authentication, and pricing for the plan windows.
curl "https://api.datacedar.com/v3/stocks/AON/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on NYSE
Common questions
AON share price history
