Aon plc historical data
| Date | Open | High | Low | Close | Adj. close | Volume |
|---|---|---|---|---|---|---|
| 2026-01-29 | 335.62 | 343.28 | 335.57 | 342.95 | 340.54 | 2,149,200 |
| 2026-01-28 | 329.41 | 335.23 | 327.53 | 333.00 | 330.66 | 1,341,200 |
| 2026-01-27 | 337.18 | 337.78 | 325.90 | 330.75 | 328.43 | 1,330,500 |
| 2026-01-26 | 339.32 | 342.00 | 336.92 | 338.87 | 336.49 | 1,156,700 |
| 2026-01-23 | 336.14 | 338.84 | 333.85 | 338.69 | 336.31 | 1,053,400 |
| 2026-01-22 | 331.99 | 336.58 | 330.30 | 335.96 | 333.60 | 1,370,700 |
| 2026-01-21 | 339.50 | 341.83 | 330.77 | 332.76 | 330.42 | 1,592,900 |
| 2026-01-20 | 341.38 | 342.97 | 337.44 | 339.50 | 337.12 | 1,645,500 |
| 2026-01-16 | 343.28 | 344.39 | 340.60 | 343.86 | 341.45 | 882,900 |
| 2026-01-15 | 346.00 | 347.06 | 342.70 | 344.84 | 342.42 | 915,900 |
| 2026-01-14 | 344.70 | 347.83 | 344.50 | 346.00 | 343.57 | 1,019,700 |
| 2026-01-13 | 348.88 | 350.70 | 343.23 | 344.59 | 342.17 | 1,028,400 |
| 2026-01-12 | 351.00 | 353.93 | 349.37 | 350.49 | 348.03 | 1,053,500 |
| 2026-01-09 | 351.41 | 353.36 | 350.12 | 350.80 | 348.34 | 678,400 |
| 2026-01-08 | 349.03 | 355.43 | 347.22 | 351.97 | 349.50 | 861,700 |
| 2026-01-07 | 348.13 | 353.16 | 342.92 | 349.92 | 347.46 | 1,390,700 |
| 2026-01-06 | 350.35 | 353.53 | 348.32 | 349.67 | 347.22 | 797,800 |
| 2026-01-05 | 340.91 | 352.16 | 339.39 | 351.29 | 348.82 | 992,700 |
| 2026-01-02 | 351.12 | 351.65 | 342.75 | 344.27 | 341.85 | 780,600 |
| 2025-12-31 | 356.96 | 356.96 | 352.82 | 352.88 | 350.40 | 453,300 |
| 2025-12-30 | 355.94 | 357.57 | 353.66 | 356.49 | 353.99 | 440,100 |
| 2025-12-29 | 356.66 | 358.55 | 355.40 | 356.73 | 354.23 | 433,200 |
| 2025-12-26 | 356.24 | 357.79 | 354.14 | 356.65 | 354.15 | 309,400 |
| 2025-12-24 | 355.00 | 358.14 | 354.02 | 356.65 | 354.15 | 283,900 |
| 2025-12-23 | 355.77 | 356.81 | 353.88 | 355.87 | 353.37 | 590,300 |
| 2025-12-22 | 348.87 | 356.77 | 348.00 | 355.46 | 352.96 | 827,000 |
| 2025-12-19 | 352.66 | 354.46 | 349.91 | 350.04 | 347.58 | 2,459,700 |
| 2025-12-18 | 350.70 | 354.06 | 350.70 | 353.02 | 350.54 | 980,100 |
| 2025-12-17 | 350.36 | 354.40 | 349.93 | 352.03 | 349.56 | 885,300 |
| 2025-12-16 | 352.84 | 354.72 | 351.04 | 351.80 | 349.33 | 1,121,400 |
| 2025-12-15 | 353.71 | 355.33 | 350.98 | 354.10 | 351.61 | 968,800 |
| 2025-12-12 | 348.64 | 354.12 | 347.39 | 353.79 | 351.31 | 1,074,300 |
| 2025-12-11 | 342.73 | 348.12 | 340.05 | 347.40 | 344.96 | 1,037,300 |
| 2025-12-10 | 346.26 | 346.42 | 336.43 | 340.05 | 337.66 | 1,300,300 |
| 2025-12-09 | 344.32 | 348.66 | 343.08 | 346.19 | 343.76 | 974,800 |
| 2025-12-08 | 343.23 | 344.55 | 341.03 | 343.39 | 340.98 | 875,000 |
| 2025-12-05 | 346.72 | 347.57 | 340.19 | 345.20 | 342.78 | 1,189,000 |
| 2025-12-04 | 344.45 | 347.99 | 344.45 | 347.71 | 345.27 | 690,800 |
| 2025-12-03 | 345.49 | 347.34 | 341.98 | 344.45 | 342.03 | 798,400 |
| 2025-12-02 | 351.04 | 351.66 | 345.54 | 345.70 | 343.27 | 982,900 |
| 2025-12-01 | 352.69 | 355.48 | 350.42 | 351.17 | 348.70 | 1,085,600 |
| 2025-11-28 | 352.12 | 355.62 | 351.49 | 353.92 | 351.44 | 400,100 |
| 2025-11-26 | 351.49 | 353.45 | 349.77 | 352.61 | 350.13 | 654,700 |
| 2025-11-25 | 344.06 | 351.50 | 342.80 | 350.96 | 348.50 | 692,600 |
| 2025-11-24 | 347.23 | 347.32 | 343.32 | 344.70 | 342.28 | 1,657,400 |
| 2025-11-21 | 346.00 | 349.70 | 344.15 | 346.51 | 344.08 | 1,967,900 |
| 2025-11-20 | 343.75 | 346.06 | 343.18 | 345.89 | 343.46 | 1,124,000 |
| 2025-11-19 | 348.36 | 349.98 | 339.17 | 344.17 | 341.75 | 1,112,000 |
| 2025-11-18 | 352.23 | 352.64 | 344.41 | 348.54 | 346.09 | 1,428,700 |
| 2025-11-17 | 350.00 | 353.00 | 347.27 | 350.02 | 347.56 | 1,609,300 |
| 2025-11-14 | 351.85 | 354.24 | 344.87 | 350.13 | 347.67 | 1,232,200 |
| 2025-11-13 | 349.94 | 352.99 | 347.28 | 350.94 | 348.48 | 1,183,600 |
| 2025-11-12 | 349.17 | 351.59 | 345.41 | 350.11 | 347.65 | 1,221,200 |
| 2025-11-11 | 346.74 | 350.43 | 344.64 | 349.93 | 347.47 | 789,600 |
| 2025-11-10 | 343.34 | 346.83 | 341.02 | 344.87 | 342.45 | 1,099,100 |
| 2025-11-07 | 340.94 | 348.18 | 339.01 | 346.32 | 343.89 | 1,500,600 |
| 2025-11-06 | 340.83 | 343.61 | 339.00 | 340.00 | 337.61 | 897,100 |
| 2025-11-05 | 344.21 | 346.76 | 341.70 | 341.70 | 339.30 | 1,344,800 |
| 2025-11-04 | 340.11 | 344.37 | 337.82 | 344.21 | 341.79 | 1,074,500 |
| 2025-11-03 | 339.42 | 340.37 | 331.14 | 339.84 | 337.45 | 1,474,800 |
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.