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 — 1987

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1987-12-31$6.78$7.58187,988
1987-12-30$6.81$7.62157,950
1987-12-29$6.81$7.62204,525
1987-12-28$7.04$7.87441,113
1987-12-24$7.04$7.87148,500
1987-12-23$7.15$7.99531,900
1987-12-22$7.04$7.87822,488
1987-12-21$6.85$7.66664,875
1987-12-18$6.56$7.33463,050
1987-12-17$6.44$7.21740,138
1987-12-16$6.37$7.12378,675
1987-12-15$6.11$6.83719,888
1987-12-14$6.19$6.92512,663
1987-12-11$6.11$6.83391,163
1987-12-10$6.44$7.21276,413
1987-12-09$6.44$7.21287,550
1987-12-08$6.81$7.62220,388
1987-12-07$6.96$7.79447,188
1987-12-04$6.67$7.46691,538
1987-12-03$6.89$7.70652,050
1987-12-02$6.96$7.791,136,700
1987-12-01$7.19$8.03343,238
1987-11-30$6.93$7.74306,450
1987-11-27$7.11$7.9569,863
1987-11-25$7.22$8.08549,450
1987-11-24$7.26$8.12218,025
1987-11-23$7.26$8.12396,225
1987-11-20$7.04$7.87340,200
1987-11-19$7.11$7.95528,525
1987-11-18$7.15$7.99447,863
1987-11-17$6.89$7.70288,563
1987-11-16$6.81$7.62200,813
1987-11-13$6.63$7.41225,788
1987-11-12$6.44$7.21646,650
1987-11-11$6.15$6.88641,588
1987-11-10$6.07$6.79728,663
1987-11-09$6.74$7.54191,700
1987-11-06$6.67$7.46293,625
1987-11-05$6.30$7.04602,100
1987-11-04$6.59$7.3777,963
1987-11-03$6.74$7.54198,788
1987-11-02$6.85$7.66237,263
1987-10-30$6.85$7.66501,525
1987-10-29$6.78$7.58299,363
1987-10-28$6.81$7.62163,013
1987-10-27$6.81$7.62427,950
1987-10-26$6.30$7.04330,750
1987-10-23$6.89$7.70190,688
1987-10-22$7.30$8.16437,400
1987-10-21$7.48$8.37741,488
1987-10-20$6.96$7.79702,338
1987-10-19$7.00$7.83782,663
1987-10-16$8.00$8.95308,475
1987-10-15$8.22$9.19421,538
1987-10-14$8.37$9.36292,275
1987-10-13$8.19$9.15352,688
1987-10-12$7.93$8.86141,413
1987-10-09$7.96$8.9098,888
1987-10-08$8.30$9.28200,138
1987-10-07$8.19$9.15131,288
1987-10-06$8.15$9.11118,463
1987-10-05$8.44$9.4462,438
1987-10-02$8.52$9.53144,113
1987-10-01$8.44$9.44152,213
1987-09-30$8.37$9.3684,038
1987-09-29$8.19$9.1530,038
1987-09-28$8.30$9.28556,200
1987-09-25$8.30$9.2896,188
1987-09-24$8.33$9.3264,463
1987-09-23$8.33$9.32118,463
1987-09-22$8.26$9.24132,638
1987-09-21$8.15$9.11169,088
1987-09-18$8.15$9.11152,888
1987-09-17$8.19$9.1593,488
1987-09-16$8.22$9.19341,888
1987-09-15$8.37$9.36140,063
1987-09-14$8.41$9.40188,663
1987-09-11$8.37$9.3693,488
1987-09-10$8.30$9.28281,813
1987-09-09$8.30$9.28189,338
1987-09-08$8.33$9.32427,275
1987-09-04$8.56$9.57636,863
1987-09-03$8.56$9.57311,175
1987-09-02$8.48$9.48276,750
1987-09-01$8.52$9.53196,088
1987-08-31$8.74$9.77154,238
1987-08-28$8.81$9.86264,938
1987-08-27$8.74$9.77146,138
1987-08-26$8.74$9.77972,000
1987-08-25$8.74$9.77165,038
1987-08-24$8.74$9.77284,850
1987-08-21$8.81$9.86336,488
1987-08-20$8.70$9.73378,675
1987-08-19$8.56$9.57359,100
1987-08-18$8.48$9.48274,050
1987-08-17$8.59$9.61610,875
1987-08-14$8.52$9.53528,863
1987-08-13$8.41$9.40919,350
1987-08-12$8.22$9.19694,913
1987-08-11$8.26$9.241,355,738
1987-08-10$8.11$9.07414,788
1987-08-07$8.04$8.99867,038
1987-08-06$7.96$8.90157,613
1987-08-05$8.00$8.95219,713
1987-08-04$8.00$8.95592,313
1987-08-03$8.15$9.11146,138
1987-07-31$8.15$9.11226,800
1987-07-30$8.22$9.19174,488
1987-07-29$8.30$9.28119,138
1987-07-28$8.30$9.28168,413
1987-07-27$8.11$9.07100,913
1987-07-24$8.07$9.03848,813
1987-07-23$8.07$9.03192,038
1987-07-22$7.93$8.86688,838
1987-07-21$8.07$9.03138,713
1987-07-20$8.30$9.28276,413
1987-07-17$8.37$9.36487,350
1987-07-16$8.15$9.11210,938
1987-07-15$8.00$8.95392,513
1987-07-14$7.85$8.78151,538
1987-07-13$7.78$8.70704,363
1987-07-10$8.00$8.95223,763
1987-07-09$7.96$8.90288,563
1987-07-08$8.00$8.95153,563
1987-07-07$7.85$8.781,017,900
1987-07-06$7.96$8.90205,538
1987-07-02$7.78$8.70310,500
1987-07-01$7.63$8.53292,613
1987-06-30$7.63$8.53530,213
1987-06-29$7.70$8.61465,413
1987-06-26$7.85$8.78211,613
1987-06-25$7.85$8.78154,238
1987-06-24$7.96$8.90132,638
1987-06-23$8.00$8.95112,388
1987-06-22$7.96$8.90249,750
1987-06-19$7.96$8.90220,388
1987-06-18$7.85$8.78159,638
1987-06-17$7.93$8.86171,788
1987-06-16$7.85$8.78326,363
1987-06-15$7.78$8.70307,463
1987-06-12$8.00$8.951,748,250
1987-06-11$7.52$8.41659,138
1987-06-10$7.52$8.4161,763
1987-06-09$7.56$8.45240,638
1987-06-08$7.52$8.41434,700
1987-06-05$7.44$8.32176,513
1987-06-04$7.56$8.45275,400
1987-06-03$7.74$8.66444,825
1987-06-02$7.44$8.32249,075
1987-06-01$7.52$8.41309,150
1987-05-29$7.30$8.16327,038
1987-05-28$7.33$8.20127,913
1987-05-27$7.33$8.20616,275
1987-05-26$7.11$7.95921,375
1987-05-22$7.04$7.87576,450
1987-05-21$6.98$7.81739,125
1987-05-20$6.96$7.79538,650
1987-05-19$6.96$7.79223,425
1987-05-18$6.96$7.79410,400
1987-05-15$7.07$7.91511,650
1987-05-14$7.16$8.00335,475
1987-05-13$7.26$8.12467,775
1987-05-12$7.22$8.08724,950
1987-05-11$7.28$8.14212,625
1987-05-08$7.26$8.12405,000
1987-05-07$7.33$8.20471,150
1987-05-06$7.43$8.30271,350
1987-05-05$7.44$8.32488,700
1987-05-04$7.38$8.25137,700
1987-05-01$7.41$8.28594,000
1987-04-30$7.44$8.32362,475
1987-04-29$7.41$8.28762,075
1987-04-28$7.41$8.28209,250
1987-04-27$7.24$8.101,099,575
1987-04-24$7.30$8.160
1987-04-23$7.30$8.16525,825
1987-04-22$7.26$8.12470,475
1987-04-21$7.41$8.28408,375
1987-04-20$7.44$8.32545,400
1987-04-16$7.33$8.20751,950
1987-04-15$7.39$8.26315,900
1987-04-14$7.54$8.43340,200
1987-04-13$7.63$8.53544,725
1987-04-10$7.96$8.90151,875
1987-04-09$8.15$9.11378,675
1987-04-08$8.22$9.19343,575
1987-04-07$8.31$9.30420,525
1987-04-06$8.28$9.26809,325
1987-04-03$8.22$9.191,086,750
1987-04-02$7.99$8.94306,450
1987-04-01$7.87$8.80521,775
1987-03-31$8.02$8.97842,400
1987-03-30$8.09$9.05393,525
1987-03-27$8.27$9.25296,325
1987-03-26$8.46$9.461,179,900
1987-03-25$8.44$9.44299,025
1987-03-24$8.44$9.43395,550
1987-03-23$8.46$9.46508,950
1987-03-20$8.49$9.491,491,075
1987-03-19$8.39$9.38414,450
1987-03-18$8.37$9.36189,000
1987-03-17$8.39$9.38602,100
1987-03-16$8.35$9.34327,375
1987-03-13$8.35$9.34209,925
1987-03-12$8.39$9.38256,500
1987-03-11$8.33$9.32834,300
1987-03-10$8.30$9.28803,925
1987-03-09$8.39$9.38217,350
1987-03-06$8.44$9.44614,250
1987-03-05$8.44$9.441,132,650
1987-03-04$8.52$9.53459,675
1987-03-03$8.56$9.57277,425
1987-03-02$8.66$9.68294,300
1987-02-27$8.54$9.55357,075
1987-02-26$8.57$9.59343,575
1987-02-25$8.57$9.59546,750
1987-02-24$8.49$9.49284,175
1987-02-23$8.66$9.68294,975
1987-02-20$8.71$9.74180,900
1987-02-19$8.71$9.7494,500
1987-02-18$8.78$9.82348,975
1987-02-17$8.78$9.82413,100
1987-02-13$8.59$9.61542,700
1987-02-12$8.56$9.57219,375
1987-02-11$8.67$9.69205,875
1987-02-10$8.56$9.57149,175
1987-02-09$8.61$9.63905,850
1987-02-06$8.59$9.61599,400
1987-02-05$8.74$9.77411,075
1987-02-04$8.63$9.65390,825
1987-02-03$8.46$9.461,446,525
1987-02-02$8.67$9.69122,175
1987-01-30$8.69$9.7199,900
1987-01-29$8.61$9.63167,400
1987-01-28$8.78$9.82302,400
1987-01-27$8.89$9.94216,675
1987-01-26$8.80$9.84105,300
1987-01-23$8.85$9.90145,800
1987-01-22$8.94$9.99280,800
1987-01-21$8.85$9.90347,625
1987-01-20$8.91$9.96218,700
1987-01-19$9.00$10.0661,425
1987-01-16$9.07$10.15390,825
1987-01-15$9.27$10.36813,375
1987-01-14$9.17$10.25196,425
1987-01-13$9.00$10.06188,325
1987-01-12$9.04$10.11257,175
1987-01-09$8.94$10.00428,625
1987-01-08$9.04$10.11248,400
1987-01-07$9.06$10.13671,625
1987-01-06$8.78$9.82149,850
1987-01-05$8.63$9.65411,075
1987-01-02$8.21$9.18217,350