NYSE:AON | Historical Stock Price | 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.

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Historical Stock Price — 1990

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1990-12-31$10.30$13.1857,713
1990-12-28$10.26$13.13115,088
1990-12-27$10.26$13.1355,350
1990-12-26$10.15$12.9988,763
1990-12-24$10.15$12.9946,913
1990-12-21$10.33$13.23453,263
1990-12-20$10.44$13.37113,400
1990-12-19$10.37$13.27268,988
1990-12-18$10.11$12.9448,938
1990-12-17$10.07$12.89214,313
1990-12-14$10.07$12.89194,400
1990-12-13$10.11$12.94571,725
1990-12-12$10.48$13.4251,975
1990-12-11$10.44$13.37133,988
1990-12-10$10.44$13.37122,175
1990-12-07$10.44$13.37138,713
1990-12-06$10.44$13.37280,463
1990-12-05$10.33$13.2349,950
1990-12-04$10.37$13.27147,825
1990-12-03$10.44$13.37192,713
1990-11-30$10.22$13.08236,250
1990-11-29$10.15$12.99414,113
1990-11-28$10.52$13.4677,625
1990-11-27$10.26$13.13106,650
1990-11-26$10.00$12.80287,888
1990-11-23$9.96$12.7563,450
1990-11-21$9.67$12.3729,363
1990-11-20$9.78$12.52210,938
1990-11-19$9.30$11.90185,625
1990-11-16$9.52$12.18170,438
1990-11-15$9.30$11.90135,675
1990-11-14$9.22$11.80419,850
1990-11-13$9.41$12.04116,100
1990-11-12$9.52$12.1863,113
1990-11-09$9.11$11.66407,363
1990-11-08$9.04$11.57362,138
1990-11-07$9.00$11.52144,450
1990-11-06$9.26$11.8589,775
1990-11-05$9.19$11.76231,863
1990-11-02$9.07$11.61117,450
1990-11-01$8.96$11.47140,738
1990-10-31$9.33$11.95218,700
1990-10-30$9.15$11.57387,113
1990-10-29$9.11$11.5279,988
1990-10-26$9.22$11.66368,888
1990-10-25$8.96$11.3372,900
1990-10-24$9.15$11.57106,313
1990-10-23$9.11$11.5293,825
1990-10-22$8.93$11.2890,450
1990-10-19$8.70$11.00196,763
1990-10-18$8.59$10.86200,138
1990-10-17$8.41$10.63106,650
1990-10-16$8.30$10.49116,775
1990-10-15$8.41$10.63226,463
1990-10-12$8.30$10.49418,838
1990-10-11$8.15$10.30688,838
1990-10-10$8.07$10.21445,163
1990-10-09$8.00$10.11355,388
1990-10-08$8.59$10.86194,738
1990-10-05$8.85$11.1929,025
1990-10-04$9.04$11.4255,350
1990-10-03$9.26$11.7132,400
1990-10-02$9.30$11.7569,863
1990-10-01$9.26$11.7142,863
1990-09-28$9.11$11.52357,413
1990-09-27$8.89$11.24476,213
1990-09-26$8.74$11.05114,750
1990-09-25$9.30$11.75310,838
1990-09-24$8.78$11.10414,113
1990-09-21$9.30$11.75128,588
1990-09-20$9.33$11.8069,525
1990-09-19$9.59$12.13197,438
1990-09-18$9.56$12.08235,913
1990-09-17$9.48$11.99283,838
1990-09-14$9.67$12.22351,000
1990-09-13$9.44$11.941,158,638
1990-09-12$9.78$12.3688,425
1990-09-11$10.22$12.9248,263
1990-09-10$10.41$13.1643,200
1990-09-07$10.41$13.1673,913
1990-09-06$10.33$13.06291,263
1990-09-05$10.41$13.16119,138
1990-09-04$10.37$13.11141,413
1990-08-31$10.37$13.1189,775
1990-08-30$10.30$13.02121,838
1990-08-29$10.19$12.8842,188
1990-08-28$9.96$12.6076,275
1990-08-27$9.93$12.55375,975
1990-08-24$9.52$12.03429,638
1990-08-23$9.63$12.17226,800
1990-08-22$9.70$12.27315,563
1990-08-21$9.56$12.08424,913
1990-08-20$9.59$12.13185,963
1990-08-17$9.52$12.03347,625
1990-08-16$9.78$12.36271,688
1990-08-15$9.93$12.55220,725
1990-08-14$9.89$12.50205,200
1990-08-13$9.70$12.27410,400
1990-08-10$9.52$12.03823,500
1990-08-09$9.70$12.27456,975
1990-08-08$9.89$12.50124,875
1990-08-07$10.07$12.74255,150
1990-08-06$10.07$12.74298,013
1990-08-03$10.44$13.2088,088
1990-08-02$10.33$13.06187,313
1990-08-01$10.37$13.1165,138
1990-07-31$10.85$13.58116,438
1990-07-30$10.85$13.5829,363
1990-07-27$10.89$13.62182,925
1990-07-26$10.67$13.3542,188
1990-07-25$10.70$13.3923,288
1990-07-24$10.74$13.44185,625
1990-07-23$10.67$13.35125,213
1990-07-20$10.81$13.53292,275
1990-07-19$10.89$13.62191,025
1990-07-18$11.07$13.85173,138
1990-07-17$11.22$14.04239,288
1990-07-16$11.22$14.04163,688
1990-07-13$11.52$14.41183,600
1990-07-12$11.48$14.36120,488
1990-07-11$11.44$14.3238,475
1990-07-10$11.63$14.55131,963
1990-07-09$11.74$14.6981,000
1990-07-06$11.81$14.78203,850
1990-07-05$11.48$14.3670,538
1990-07-03$11.41$14.2770,875
1990-07-02$11.26$14.09129,263
1990-06-29$11.11$13.90110,363
1990-06-28$11.15$13.95137,025
1990-06-27$11.30$14.1377,288
1990-06-26$11.48$14.3684,713
1990-06-25$11.74$14.6955,688
1990-06-22$11.85$14.83136,013
1990-06-21$11.78$14.74253,800
1990-06-20$11.74$14.6983,363
1990-06-19$11.81$14.78436,388
1990-06-18$12.07$15.11355,725
1990-06-15$12.15$15.20150,188
1990-06-14$12.15$15.20165,375
1990-06-13$12.07$15.1164,800
1990-06-12$12.07$15.11172,125
1990-06-11$12.19$15.25195,413
1990-06-08$12.07$15.11356,738
1990-06-07$12.04$15.0676,950
1990-06-06$11.93$14.9299,900
1990-06-05$11.85$14.83173,138
1990-06-04$11.81$14.7867,500
1990-06-01$11.70$14.64349,313
1990-05-31$11.63$14.55112,725
1990-05-30$11.67$14.60104,288
1990-05-29$11.56$14.4649,275
1990-05-25$11.56$14.4635,438
1990-05-24$11.59$14.50153,225
1990-05-23$11.56$14.46102,263
1990-05-22$11.52$14.41247,725
1990-05-21$11.44$14.32128,925
1990-05-18$11.30$14.13129,938
1990-05-17$11.26$14.0967,163
1990-05-16$11.26$14.0981,000
1990-05-15$11.26$14.0986,400
1990-05-14$11.33$14.18250,425
1990-05-11$11.30$14.13164,700
1990-05-10$11.15$13.95172,463
1990-05-09$11.07$13.85181,913
1990-05-08$10.93$13.6727,000
1990-05-07$10.85$13.58229,838
1990-05-04$10.67$13.35148,500
1990-05-03$10.56$13.21218,363
1990-05-02$10.41$13.02158,963
1990-05-01$10.52$13.02253,125
1990-04-30$10.33$12.79222,750
1990-04-27$10.19$12.61336,825
1990-04-26$10.30$12.7485,388
1990-04-25$10.33$12.7942,188
1990-04-24$10.22$12.6590,450
1990-04-23$10.15$12.56114,750
1990-04-20$10.48$12.97334,463
1990-04-19$10.81$13.39171,450
1990-04-18$11.11$13.75172,800
1990-04-17$11.26$13.94301,050
1990-04-16$11.26$13.9479,313
1990-04-12$11.07$13.7195,850
1990-04-11$10.96$13.5765,813
1990-04-10$11.00$13.61189,338
1990-04-09$10.96$13.57117,450
1990-04-06$10.89$13.48445,838
1990-04-05$11.11$13.75355,725
1990-04-04$11.26$13.94198,450
1990-04-03$11.22$13.89184,275
1990-04-02$11.00$13.61213,975
1990-03-30$11.11$13.75242,325
1990-03-29$11.04$13.66229,163
1990-03-28$11.15$13.80237,938
1990-03-27$10.89$13.48126,900
1990-03-26$10.56$13.06106,650
1990-03-23$10.44$12.93173,813
1990-03-22$10.48$12.97183,938
1990-03-21$10.63$13.1689,438
1990-03-20$10.81$13.3956,363
1990-03-19$10.81$13.39208,575
1990-03-16$10.89$13.48213,975
1990-03-15$10.85$13.4344,888
1990-03-14$10.89$13.4865,475
1990-03-13$10.85$13.43198,450
1990-03-12$10.78$13.34256,838
1990-03-09$10.89$13.4898,213
1990-03-08$11.04$13.66141,413
1990-03-07$10.96$13.57461,025
1990-03-06$11.00$13.6145,563
1990-03-05$11.00$13.61388,125
1990-03-02$11.11$13.75465,075
1990-03-01$11.04$13.66115,425
1990-02-28$11.07$13.7199,563
1990-02-27$11.04$13.66114,075
1990-02-26$10.93$13.52227,475
1990-02-23$10.93$13.52123,525
1990-02-22$11.00$13.61100,238
1990-02-21$10.96$13.57231,525
1990-02-20$11.15$13.8092,475
1990-02-16$11.22$13.89175,838
1990-02-15$11.22$13.89155,588
1990-02-14$11.15$13.8041,850
1990-02-13$11.19$13.8462,438
1990-02-12$11.00$13.61104,625
1990-02-09$11.07$13.71180,563
1990-02-08$10.96$13.57637,200
1990-02-07$10.93$13.52222,750
1990-02-06$10.96$13.57328,050
1990-02-05$10.89$13.48409,725
1990-02-02$11.15$13.80322,650
1990-02-01$11.04$13.66593,325
1990-01-31$11.00$13.49255,488
1990-01-30$10.96$13.44291,263
1990-01-29$11.11$13.62285,863
1990-01-26$11.11$13.62141,075
1990-01-25$11.19$13.71131,288
1990-01-24$11.33$13.90277,088
1990-01-23$11.48$14.0883,700
1990-01-22$11.48$14.08203,513
1990-01-19$11.52$14.1278,975
1990-01-18$11.44$14.03209,588
1990-01-17$11.56$14.17149,850
1990-01-16$11.81$14.49100,575
1990-01-15$11.70$14.35147,825
1990-01-12$11.63$14.26298,688
1990-01-11$11.70$14.35101,250
1990-01-10$11.89$14.58252,788
1990-01-09$11.93$14.62158,625
1990-01-08$11.85$14.53174,825
1990-01-05$12.07$14.80387,788
1990-01-04$12.33$15.12260,550
1990-01-03$12.52$15.35701,663
1990-01-02$12.56$15.39243,675