NYSE:AON | Stock Price History | Aon plc

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
1980-06-02 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$2.39$8.08$27.30$92.20$311.44$1,051.961980-06-022026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

Historical Stock Price

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2026-09-04$328.1883,743
2026-09-03$331.3569,299
2026-09-02$327.2792,300
2026-09-01$321.39161,056
2026-08-31$342.64169,773
2026-08-28$351.1627,931
2026-08-27$349.56$873.33688,200$350.2427,501
2026-08-26$353.98$884.37594,200$354.9726,158
2026-08-25$354.83$886.49616,300$355.9428,814
2026-08-24$359.10$897.16627,200$357.5525,307
2026-08-21$355.11$887.19747,000$351.3130,851
2026-08-20$351.93$879.25733,300$347.5433,216
2026-08-19$348.43$870.51615,900$344.3219,511
2026-08-18$343.20$857.44921,500$343.6353,933
2026-08-17$347.22$867.48709,300$353.8637,191
2026-08-14$355.83$888.99704,500$358.2829,439
2026-08-13$357.08$892.12810,100$354.9054,857
2026-08-12$352.36$880.32626,000$351.6127,606
2026-08-11$356.46$890.57403,300$355.3517,682
2026-08-10$356.97$891.84705,300$357.7132,201
2026-08-07$358.30$895.16928,700$357.1524,840
2026-08-06$360.75$901.291,140,000$362.3249,130
2026-08-05$359.97$899.34657,200$355.3590,520
2026-08-04$356.65$891.041,433,500$352.5786,336
2026-08-03$357.63$893.491,950,100$360.4036,907
2026-07-31$360.55$898.741,315,600$361.3368,469
2026-07-30$366.57$913.744,227,700$368.08139,186
2026-07-29$377.16$940.142,010,600$362.26126,159
2026-07-28$381.26$950.361,508,000$368.5483,059
2026-07-27$367.17$915.241,590,500$361.0470,819
2026-07-24$361.70$901.60785,000$356.6737,066
2026-07-23$355.78$886.851,178,100$352.3041,024
2026-07-22$352.33$878.251,813,200$359.6886,784
2026-07-21$359.40$895.871,371,200$359.3542,367
2026-07-20$362.78$904.301,074,100$363.3165,329
2026-07-17$367.21$915.341,445,600
2026-07-16$368.63$918.881,017,900
2026-07-15$355.15$885.281,193,600
2026-07-14$358.89$894.601,168,300
2026-07-13$367.35$915.691,511,700
2026-07-10$356.94$889.74998,600
2026-07-09$355.56$886.30602,000
2026-07-08$357.51$891.16641,700
2026-07-07$359.82$896.92830,200
2026-07-06$356.91$889.661,218,000
2026-07-02$357.46$891.031,183,000
2026-07-01$343.56$856.391,913,700
2026-06-30$331.69$826.801,588,800
2026-06-29$327.57$816.531,387,400
2026-06-26$328.69$819.325,288,300
2026-06-25$315.95$787.561,744,200
2026-06-24$325.48$811.322,362,200
2026-06-23$320.74$799.502,626,900
2026-06-22$313.63$781.782,131,300
2026-06-18$317.74$792.032,382,900
2026-06-17$326.69$814.331,751,100
2026-06-16$331.45$826.201,751,400
2026-06-15$329.51$821.361,405,800
2026-06-12$335.31$835.821,377,900
2026-06-11$335.17$835.471,431,100
2026-06-10$336.33$838.361,749,500
2026-06-09$331.59$826.551,956,200
2026-06-08$325.85$812.241,470,300
2026-06-05$328.53$818.921,341,000
2026-06-04$322.24$803.241,579,700
2026-06-03$315.60$786.691,617,800
2026-06-02$317.86$792.321,051,200
2026-06-01$320.41$798.681,431,600
2026-05-29$316.06$787.842,856,900
2026-05-28$318.30$793.421,350,700
2026-05-27$318.54$794.021,073,700
2026-05-26$319.29$795.891,411,400
2026-05-22$324.78$809.57929,000
2026-05-21$324.22$808.18946,500
2026-05-20$321.15$800.531,479,300
2026-05-19$323.66$806.782,140,600
2026-05-18$326.57$814.041,455,600
2026-05-15$317.22$790.731,955,300
2026-05-14$315.41$786.221,844,800
2026-05-13$310.90$774.981,672,400
2026-05-12$316.35$788.561,622,700
2026-05-11$312.07$777.891,166,100
2026-05-08$312.79$779.691,179,200
2026-05-07$313.59$781.681,858,900
2026-05-06$308.27$768.421,476,900
2026-05-05$314.55$784.071,177,100
2026-05-04$314.92$785.001,382,000
2026-05-01$311.51$776.501,822,700
2026-04-30$311.65$774.802,614,600
2026-04-29$322.49$801.751,156,800
2026-04-28$321.68$799.741,312,200
2026-04-27$323.78$804.961,248,900
2026-04-24$321.14$798.39761,200
2026-04-23$323.56$804.41941,300
2026-04-22$326.86$812.611,281,900
2026-04-21$335.32$833.651,215,000
2026-04-20$331.95$825.27792,200
2026-04-17$331.80$824.901,161,400
2026-04-16$335.34$833.701,350,000
2026-04-15$328.08$815.651,093,700