Aon plc historical data
| Date | Open | High | Low | Close | Adj. close | Volume |
|---|---|---|---|---|---|---|
| 2025-10-31 | 336.43 | 348.61 | 334.80 | 340.68 | 337.55 | 2,460,200 |
| 2025-10-30 | 328.07 | 330.71 | 326.51 | 328.19 | 325.17 | 2,212,400 |
| 2025-10-29 | 327.93 | 329.19 | 324.28 | 326.07 | 323.07 | 1,532,200 |
| 2025-10-28 | 335.21 | 335.21 | 329.00 | 329.96 | 326.93 | 1,212,800 |
| 2025-10-27 | 337.00 | 338.61 | 335.24 | 336.87 | 333.77 | 1,438,700 |
| 2025-10-24 | 340.50 | 342.33 | 337.34 | 337.73 | 334.63 | 842,000 |
| 2025-10-23 | 343.00 | 343.40 | 338.25 | 341.35 | 338.21 | 1,238,200 |
| 2025-10-22 | 343.32 | 344.29 | 340.51 | 343.10 | 339.95 | 1,189,500 |
| 2025-10-21 | 343.80 | 346.37 | 342.18 | 343.43 | 340.27 | 981,500 |
| 2025-10-20 | 347.22 | 347.22 | 341.40 | 344.11 | 340.95 | 935,100 |
| 2025-10-17 | 344.07 | 348.31 | 344.06 | 346.60 | 343.41 | 2,057,500 |
| 2025-10-16 | 348.92 | 349.04 | 337.92 | 343.12 | 339.97 | 1,820,400 |
| 2025-10-15 | 357.49 | 359.97 | 353.93 | 355.80 | 352.53 | 1,094,300 |
| 2025-10-14 | 353.78 | 360.82 | 352.40 | 360.51 | 357.20 | 845,600 |
| 2025-10-13 | 357.11 | 359.56 | 351.87 | 353.36 | 350.11 | 728,700 |
| 2025-10-10 | 362.26 | 363.29 | 359.18 | 360.15 | 356.84 | 628,100 |
| 2025-10-09 | 365.60 | 367.25 | 359.92 | 360.42 | 357.11 | 692,500 |
| 2025-10-08 | 366.49 | 370.31 | 364.94 | 365.38 | 362.02 | 1,114,400 |
| 2025-10-07 | 366.25 | 369.68 | 364.33 | 366.93 | 363.56 | 852,900 |
| 2025-10-06 | 364.07 | 367.00 | 362.12 | 365.70 | 362.34 | 1,109,200 |
| 2025-10-03 | 359.95 | 365.98 | 359.49 | 363.81 | 360.47 | 666,900 |
| 2025-10-02 | 357.47 | 362.23 | 354.61 | 360.73 | 357.41 | 621,300 |
| 2025-10-01 | 355.15 | 360.14 | 353.31 | 360.13 | 356.82 | 1,444,900 |
| 2025-09-30 | 354.52 | 357.01 | 351.80 | 356.58 | 353.30 | 1,022,800 |
| 2025-09-29 | 355.01 | 356.62 | 352.56 | 354.62 | 351.36 | 1,059,600 |
| 2025-09-26 | 354.17 | 358.99 | 351.49 | 356.08 | 352.81 | 824,600 |
| 2025-09-25 | 355.46 | 356.74 | 349.15 | 351.64 | 348.41 | 1,291,100 |
| 2025-09-24 | 352.84 | 356.28 | 352.50 | 353.74 | 350.49 | 981,300 |
| 2025-09-23 | 353.40 | 356.58 | 349.33 | 353.07 | 349.82 | 1,761,200 |
| 2025-09-22 | 350.56 | 355.21 | 349.21 | 353.46 | 350.21 | 1,275,900 |
| 2025-09-19 | 354.19 | 355.40 | 348.64 | 351.32 | 348.09 | 3,728,800 |
| 2025-09-18 | 355.64 | 357.83 | 352.69 | 352.76 | 349.52 | 1,392,900 |
| 2025-09-17 | 357.97 | 361.24 | 355.22 | 358.00 | 354.71 | 1,426,900 |
| 2025-09-16 | 361.26 | 362.76 | 356.15 | 356.57 | 353.29 | 1,351,500 |
| 2025-09-15 | 371.90 | 373.60 | 363.20 | 363.80 | 360.46 | 933,800 |
| 2025-09-12 | 371.56 | 374.05 | 369.81 | 371.95 | 368.53 | 844,400 |
| 2025-09-11 | 366.09 | 372.39 | 364.79 | 372.25 | 368.83 | 1,614,300 |
| 2025-09-10 | 364.78 | 365.36 | 361.08 | 362.37 | 359.04 | 798,900 |
| 2025-09-09 | 369.93 | 370.48 | 365.86 | 366.38 | 363.01 | 1,019,900 |
| 2025-09-08 | 370.54 | 370.54 | 365.47 | 370.01 | 366.61 | 1,043,500 |
| 2025-09-05 | 372.91 | 375.64 | 368.04 | 370.54 | 367.13 | 789,000 |
| 2025-09-04 | 375.48 | 375.87 | 370.85 | 373.49 | 370.06 | 751,300 |
| 2025-09-03 | 372.68 | 375.00 | 368.27 | 374.00 | 370.56 | 1,219,900 |
| 2025-09-02 | 367.63 | 372.75 | 365.96 | 371.96 | 368.54 | 1,285,600 |
| 2025-08-29 | 367.85 | 368.56 | 365.79 | 367.00 | 363.63 | 774,600 |
| 2025-08-28 | 367.77 | 368.04 | 364.03 | 366.54 | 363.17 | 711,200 |
| 2025-08-27 | 369.90 | 371.09 | 368.02 | 368.37 | 364.98 | 931,600 |
| 2025-08-26 | 369.14 | 371.11 | 367.02 | 369.00 | 365.61 | 1,449,900 |
| 2025-08-25 | 374.11 | 376.69 | 370.73 | 370.94 | 367.53 | 1,025,900 |
| 2025-08-22 | 377.45 | 378.70 | 373.85 | 375.10 | 371.65 | 1,190,600 |
| 2025-08-21 | 372.50 | 375.77 | 371.17 | 375.27 | 371.82 | 1,126,200 |
| 2025-08-20 | 373.93 | 378.68 | 372.72 | 374.00 | 370.56 | 1,105,000 |
| 2025-08-19 | 367.09 | 373.36 | 366.24 | 372.86 | 369.43 | 1,111,100 |
| 2025-08-18 | 366.08 | 369.78 | 365.21 | 365.37 | 362.01 | 1,323,900 |
| 2025-08-15 | 367.20 | 370.70 | 365.21 | 367.01 | 363.64 | 1,181,100 |
| 2025-08-14 | 371.04 | 372.04 | 365.14 | 366.35 | 362.98 | 1,292,900 |
| 2025-08-13 | 366.81 | 372.46 | 365.59 | 370.92 | 367.51 | 1,316,700 |
| 2025-08-12 | 368.48 | 368.66 | 360.25 | 363.81 | 360.47 | 2,991,600 |
| 2025-08-11 | 366.95 | 370.34 | 365.46 | 368.09 | 364.71 | 1,274,700 |
| 2025-08-08 | 367.00 | 367.01 | 363.58 | 366.40 | 363.03 | 1,095,200 |
Stock splits
| Date | Split (new : old) |
|---|---|
| 1999-05-18 | 3:2 |
| 1997-05-15 | 3:2 |
| 1994-05-17 | 3:2 |
Dividends
| Ex-date | Amount |
|---|---|
| 2026-08-03 | 0.8200 USD |
| 2026-05-01 | 0.8200 USD |
| 2026-02-02 | 0.7450 USD |
| 2025-11-03 | 0.7450 USD |
| 2025-08-01 | 0.7450 USD |
| 2025-05-01 | 0.7450 USD |
| 2025-02-03 | 0.6750 USD |
| 2024-11-01 | 0.6750 USD |
| 2024-08-01 | 0.6750 USD |
| 2024-04-30 | 0.6750 USD |
| 2024-01-31 | 0.6150 USD |
| 2023-10-31 | 0.6150 USD |
| 2023-07-31 | 0.6150 USD |
| 2023-04-28 | 0.6150 USD |
| 2023-01-31 | 0.5600 USD |
| 2022-10-31 | 0.5600 USD |
| 2022-07-29 | 0.5600 USD |
| 2022-04-29 | 0.5600 USD |
| 2022-01-31 | 0.5100 USD |
| 2021-10-29 | 0.5100 USD |
| 2021-07-30 | 0.5100 USD |
| 2021-04-30 | 0.5100 USD |
| 2021-01-29 | 0.4600 USD |
| 2020-10-30 | 0.4600 USD |
| 2020-07-31 | 0.4400 USD |
| 2020-04-30 | 0.4400 USD |
| 2020-01-31 | 0.4400 USD |
| 2019-10-31 | 0.4400 USD |
| 2019-07-31 | 0.4400 USD |
| 2019-04-30 | 0.4400 USD |
| 2019-01-31 | 0.4000 USD |
Open, high, low and close are as traded (USD). Adjusted close accounts for splits and dividends. Educational only, not financial advice.