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 — 1988

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1988-12-30$8.30$9.75244,350
1988-12-29$8.15$9.58138,038
1988-12-28$8.07$9.49110,363
1988-12-27$8.11$9.53122,513
1988-12-23$8.22$9.66286,875
1988-12-22$8.07$9.49317,925
1988-12-21$7.93$9.32106,313
1988-12-20$7.96$9.36134,325
1988-12-19$7.89$9.27154,913
1988-12-16$7.78$9.14298,350
1988-12-15$7.81$9.19698,963
1988-12-14$7.89$9.27285,525
1988-12-13$7.93$9.32271,350
1988-12-12$8.04$9.45146,138
1988-12-09$8.11$9.53229,838
1988-12-08$8.00$9.40123,188
1988-12-07$8.07$9.49202,838
1988-12-06$8.04$9.45178,538
1988-12-05$8.07$9.49366,863
1988-12-02$8.00$9.40174,488
1988-12-01$8.22$9.66450,225
1988-11-30$8.15$9.58168,750
1988-11-29$8.04$9.45113,063
1988-11-28$7.93$9.32225,113
1988-11-25$7.89$9.27123,863
1988-11-23$8.07$9.49166,725
1988-11-22$8.04$9.45269,663
1988-11-21$8.00$9.40142,088
1988-11-18$8.07$9.49572,738
1988-11-17$8.00$9.40479,588
1988-11-16$8.00$9.40131,963
1988-11-15$8.15$9.58261,225
1988-11-14$8.26$9.71433,688
1988-11-11$8.37$9.8476,275
1988-11-10$8.44$9.93457,988
1988-11-09$8.44$9.93138,375
1988-11-08$8.37$9.84294,975
1988-11-07$8.37$9.84402,300
1988-11-04$8.30$9.75159,300
1988-11-03$8.44$9.93332,100
1988-11-02$8.37$9.84142,763
1988-11-01$8.44$9.81306,113
1988-10-31$8.52$9.90319,613
1988-10-28$8.30$9.6465,475
1988-10-27$8.41$9.77261,225
1988-10-26$8.52$9.9093,488
1988-10-25$8.44$9.8157,713
1988-10-24$8.44$9.8186,738
1988-10-21$8.44$9.81276,413
1988-10-20$8.37$9.7392,475
1988-10-19$8.37$9.73235,575
1988-10-18$8.33$9.68290,925
1988-10-17$8.30$9.6475,938
1988-10-14$8.22$9.5697,538
1988-10-13$8.15$9.4795,175
1988-10-12$8.26$9.60175,838
1988-10-11$8.22$9.56339,863
1988-10-10$8.22$9.56109,350
1988-10-07$8.19$9.51123,188
1988-10-06$8.15$9.4796,188
1988-10-05$8.15$9.4785,725
1988-10-04$8.04$9.3438,138
1988-10-03$8.07$9.38116,438
1988-09-30$8.07$9.38271,688
1988-09-29$7.96$9.2596,525
1988-09-28$8.04$9.3457,713
1988-09-27$8.00$9.3048,263
1988-09-26$7.89$9.1750,963
1988-09-23$7.96$9.25100,913
1988-09-22$8.00$9.30136,350
1988-09-21$8.00$9.3042,525
1988-09-20$8.00$9.3056,025
1988-09-19$8.04$9.3432,738
1988-09-16$8.04$9.3464,463
1988-09-15$8.07$9.38166,388
1988-09-14$8.04$9.3480,325
1988-09-13$8.19$9.5135,100
1988-09-12$8.19$9.5138,813
1988-09-09$8.26$9.60151,875
1988-09-08$8.22$9.56104,625
1988-09-07$8.15$9.47126,900
1988-09-06$8.04$9.34113,063
1988-09-02$8.00$9.30178,200
1988-09-01$8.00$9.30132,975
1988-08-31$8.11$9.43403,988
1988-08-30$7.96$9.25155,588
1988-08-29$7.96$9.25163,350
1988-08-26$7.93$9.2143,538
1988-08-25$7.93$9.2127,000
1988-08-24$8.07$9.38117,113
1988-08-23$8.00$9.30109,350
1988-08-22$8.00$9.30178,875
1988-08-19$8.00$9.30131,963
1988-08-18$8.00$9.30326,025
1988-08-17$7.96$9.25258,863
1988-08-16$7.93$9.2173,238
1988-08-15$7.85$9.13108,338
1988-08-12$7.93$9.21209,250
1988-08-11$7.93$9.21140,063
1988-08-10$7.81$9.08211,950
1988-08-09$7.89$9.17309,488
1988-08-08$8.04$9.34112,050
1988-08-05$8.04$9.34139,725
1988-08-04$8.04$9.34391,163
1988-08-03$8.07$9.38166,388
1988-08-02$8.07$9.27365,850
1988-08-01$8.00$9.1975,938
1988-07-29$8.11$9.32312,188
1988-07-28$8.04$9.23119,813
1988-07-27$7.96$9.15193,388
1988-07-26$7.93$9.1082,688
1988-07-25$7.89$9.06115,425
1988-07-22$7.81$8.98151,538
1988-07-21$7.81$8.98159,300
1988-07-20$7.81$8.9840,500
1988-07-19$7.81$8.98100,575
1988-07-18$7.93$9.10224,100
1988-07-15$7.89$9.0630,038
1988-07-14$7.85$9.02220,050
1988-07-13$7.93$9.10193,388
1988-07-12$7.85$9.02237,600
1988-07-11$7.93$9.10181,575
1988-07-08$7.85$9.02191,025
1988-07-07$7.78$8.93118,125
1988-07-06$7.85$9.02174,150
1988-07-05$7.89$9.0665,813
1988-07-01$7.81$8.9899,900
1988-06-30$7.81$8.98312,863
1988-06-29$7.74$8.89541,013
1988-06-28$7.63$8.76158,963
1988-06-27$7.59$8.72101,925
1988-06-24$7.59$8.7240,163
1988-06-23$7.63$8.76103,613
1988-06-22$7.59$8.7270,875
1988-06-21$7.44$8.55143,100
1988-06-20$7.33$8.42649,013
1988-06-17$7.52$8.64104,963
1988-06-16$7.44$8.55198,113
1988-06-15$7.67$8.81243,675
1988-06-14$7.67$8.81308,475
1988-06-13$7.56$8.68238,613
1988-06-10$7.59$8.72301,050
1988-06-09$7.44$8.55157,275
1988-06-08$7.70$8.85335,813
1988-06-07$7.59$8.7299,225
1988-06-06$7.52$8.64268,313
1988-06-03$7.37$8.4751,975
1988-06-02$7.37$8.47102,938
1988-06-01$7.30$8.38171,450
1988-05-31$7.37$8.47118,800
1988-05-27$7.15$8.2157,038
1988-05-26$7.19$8.25215,325
1988-05-25$7.11$8.17182,925
1988-05-24$7.11$8.17102,600
1988-05-23$7.07$8.12110,700
1988-05-20$7.11$8.17171,788
1988-05-19$7.04$8.08145,800
1988-05-18$6.81$7.83335,475
1988-05-17$7.37$8.47133,988
1988-05-16$7.26$8.34441,113
1988-05-13$7.11$8.17284,175
1988-05-12$6.93$7.9573,238
1988-05-11$6.81$7.8377,963
1988-05-10$6.67$7.6689,100
1988-05-09$6.74$7.7459,063
1988-05-06$6.81$7.83404,663
1988-05-05$6.89$7.91528,525
1988-05-04$6.89$7.9170,875
1988-05-03$7.00$8.04191,700
1988-05-02$7.04$8.08819,450
1988-04-29$7.44$8.55231,863
1988-04-28$7.22$8.3054,675
1988-04-27$7.22$8.30207,563
1988-04-26$7.26$8.23170,438
1988-04-25$7.41$8.4095,513
1988-04-22$7.22$8.19186,300
1988-04-21$7.22$8.19167,400
1988-04-20$7.30$8.27220,388
1988-04-19$7.30$8.27229,838
1988-04-18$7.26$8.23116,100
1988-04-15$7.37$8.35197,438
1988-04-14$7.37$8.35442,800
1988-04-13$7.52$8.52128,925
1988-04-12$7.52$8.52142,763
1988-04-11$7.48$8.48146,475
1988-04-08$7.33$8.31126,900
1988-04-07$7.41$8.40184,275
1988-04-06$7.41$8.40280,800
1988-04-05$7.37$8.3550,963
1988-04-04$7.33$8.31122,175
1988-03-31$7.41$8.40205,875
1988-03-30$7.19$8.1495,513
1988-03-29$7.33$8.3149,275
1988-03-28$7.15$8.1069,188
1988-03-25$7.22$8.19715,163
1988-03-24$7.52$8.52121,838
1988-03-23$7.78$8.82520,088
1988-03-22$7.41$8.40422,888
1988-03-21$7.41$8.40330,075
1988-03-18$7.70$8.73202,163
1988-03-17$7.70$8.7399,563
1988-03-16$7.70$8.73457,313
1988-03-15$7.78$8.82144,788
1988-03-14$7.81$8.86103,275
1988-03-11$7.67$8.69143,775
1988-03-10$7.70$8.7381,000
1988-03-09$7.78$8.8285,388
1988-03-08$7.81$8.86130,950
1988-03-07$7.78$8.82253,800
1988-03-04$7.85$8.90131,288
1988-03-03$7.96$9.03267,638
1988-03-02$7.93$8.98219,713
1988-03-01$7.89$8.94310,500
1988-02-29$7.74$8.77169,425
1988-02-26$7.78$8.82253,800
1988-02-25$7.85$8.90432,338
1988-02-24$7.70$8.73241,988
1988-02-23$7.70$8.73182,925
1988-02-22$7.63$8.65195,413
1988-02-19$7.59$8.61247,050
1988-02-18$7.52$8.52351,338
1988-02-17$7.48$8.48186,975
1988-02-16$7.33$8.31195,750
1988-02-12$7.22$8.19221,400
1988-02-11$7.19$8.14167,738
1988-02-10$7.19$8.14257,513
1988-02-09$7.22$8.1998,213
1988-02-08$7.33$8.31266,963
1988-02-05$7.26$8.23362,813
1988-02-04$7.15$8.10249,750
1988-02-03$6.96$7.89187,650
1988-02-02$6.93$7.85212,625
1988-02-01$6.78$7.68861,638
1988-01-29$6.78$7.68533,925
1988-01-28$6.81$7.72373,613
1988-01-27$6.63$7.51329,738
1988-01-26$6.59$7.37425,925
1988-01-25$6.63$7.41460,350
1988-01-22$6.63$7.41133,650
1988-01-21$6.74$7.54179,213
1988-01-20$6.96$7.79199,125
1988-01-19$7.04$7.87391,500
1988-01-18$7.11$7.95182,250
1988-01-15$7.00$7.83519,750
1988-01-14$6.89$7.7063,450
1988-01-13$6.96$7.7991,463
1988-01-12$6.74$7.5464,800
1988-01-11$6.74$7.54123,863
1988-01-08$6.96$7.79305,775
1988-01-07$7.15$7.99354,038
1988-01-06$7.04$7.87334,463
1988-01-05$6.74$7.54236,588
1988-01-04$7.00$7.83306,113