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 — 1980

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1980-12-31$2.61$2.6158,050——
1980-12-30$2.63$2.6365,475——
1980-12-29$2.61$2.61193,725——
1980-12-26$2.67$2.6743,875——
1980-12-24$2.61$2.61392,175——
1980-12-23$2.63$2.63513,675——
1980-12-22$2.63$2.63118,800——
1980-12-19$2.52$2.52226,800——
1980-12-18$2.56$2.56267,300——
1980-12-17$2.56$2.5689,775——
1980-12-16$2.56$2.56238,950——
1980-12-15$2.54$2.54193,050——
1980-12-12$2.52$2.5280,325——
1980-12-11$2.50$2.50243,000——
1980-12-10$2.57$2.57483,975——
1980-12-09$2.61$2.61142,425——
1980-12-08$2.57$2.57122,850——
1980-12-05$2.59$2.5993,150——
1980-12-04$2.61$2.6175,600——
1980-12-03$2.61$2.61772,875——
1980-12-02$2.63$2.6368,850——
1980-12-01$2.59$2.59114,075——
1980-11-28$2.61$2.6189,775——
1980-11-26$2.61$2.61165,375——
1980-11-25$2.65$2.65467,100——
1980-11-24$2.59$2.59348,300——
1980-11-21$2.59$2.59359,775——
1980-11-20$2.65$2.65288,225——
1980-11-19$2.61$2.61261,225——
1980-11-18$2.59$2.5972,900——
1980-11-17$2.65$2.65165,375——
1980-11-14$2.69$2.69247,050——
1980-11-13$2.70$2.70132,975——
1980-11-12$2.70$2.70288,225——
1980-11-11$2.63$2.63349,650——
1980-11-10$2.59$2.59258,525——
1980-11-07$2.67$2.67185,625——
1980-11-06$2.57$2.57392,850——
1980-11-05$2.74$2.7493,150——
1980-11-03$2.72$2.72126,225——
1980-10-31$2.72$2.7257,375——
1980-10-30$2.74$2.7470,200——
1980-10-29$2.76$2.7659,400——
1980-10-28$2.76$2.76172,125——
1980-10-27$2.78$2.7838,475——
1980-10-24$2.78$2.7882,350——
1980-10-23$2.78$2.7875,600——
1980-10-22$2.87$2.8745,225——
1980-10-21$2.87$2.8772,225——
1980-10-20$2.89$2.8949,275——
1980-10-17$2.81$2.81176,175——
1980-10-16$2.85$2.85245,025——
1980-10-15$2.89$2.8975,600——
1980-10-14$2.93$2.93227,475——
1980-10-13$2.89$2.8923,625——
1980-10-10$2.85$2.85352,350——
1980-10-09$2.87$2.87270,675——
1980-10-08$2.83$2.83386,100——
1980-10-07$2.87$2.87230,175——
1980-10-06$2.80$2.80226,800——
1980-10-03$2.89$2.89276,075——
1980-10-02$2.80$2.80100,575——
1980-10-01$2.80$2.80222,750——
1980-09-30$2.83$2.83271,350——
1980-09-29$2.78$2.78118,800——
1980-09-26$2.91$2.91122,850——
1980-09-25$2.89$2.89356,400——
1980-09-24$2.83$2.8343,200——
1980-09-23$2.85$2.85152,550——
1980-09-22$2.89$2.89139,725——
1980-09-19$2.83$2.8370,200——
1980-09-18$2.87$2.87230,175——
1980-09-17$2.89$2.8991,800——
1980-09-16$2.91$2.9177,625——
1980-09-15$2.89$2.8962,100——
1980-09-12$2.91$2.9142,525——
1980-09-11$2.91$2.91108,675——
1980-09-10$2.89$2.89107,325——
1980-09-09$2.89$2.8984,375——
1980-09-08$2.87$2.87999,000——
1980-09-05$2.85$2.85136,350——
1980-09-04$2.87$2.87188,325——
1980-09-03$2.89$2.89133,650——
1980-09-02$2.87$2.8743,875——
1980-08-29$2.85$2.85109,350——
1980-08-28$2.91$2.9187,750——
1980-08-27$2.94$2.9487,750——
1980-08-26$2.93$2.9389,100——
1980-08-25$2.94$2.9437,800——
1980-08-22$2.96$2.96122,175——
1980-08-21$2.96$2.96238,950——
1980-08-20$2.94$2.9456,700——
1980-08-19$2.98$2.9868,175——
1980-08-18$2.98$2.9871,550——
1980-08-15$3.00$3.00178,875——
1980-08-14$2.94$2.9472,225——
1980-08-13$2.96$2.96340,200——
1980-08-12$2.93$2.9397,200——
1980-08-11$2.93$2.9356,025——
1980-08-08$2.94$2.94342,900——
1980-08-07$2.89$2.89139,725——
1980-08-06$2.89$2.89104,625——
1980-08-05$2.91$2.9174,925——
1980-08-04$2.93$2.9380,325——
1980-08-01$2.87$2.87112,725——
1980-07-31$2.91$2.91117,450——
1980-07-30$2.94$2.94452,925——
1980-07-29$2.93$2.9339,825——
1980-07-28$2.91$2.9158,050——
1980-07-25$2.93$2.9358,725——
1980-07-24$2.91$2.91168,750——
1980-07-23$2.93$2.93141,750——
1980-07-22$2.94$2.94284,850——
1980-07-21$2.96$2.9644,550——
1980-07-18$2.98$2.98193,725——
1980-07-17$2.94$2.9491,125——
1980-07-16$2.96$2.96264,600——
1980-07-15$2.91$2.91366,525——
1980-07-14$2.94$2.94256,500——
1980-07-11$2.87$2.871,334,475——
1980-07-10$2.91$2.9170,200——
1980-07-09$3.00$3.0033,075——
1980-07-08$2.96$2.96110,700——
1980-07-07$3.02$3.02111,375——
1980-07-03$3.00$3.0056,700——
1980-07-02$2.91$2.9143,875——
1980-07-01$2.93$2.93150,525——
1980-06-30$2.83$2.83108,000——
1980-06-27$2.87$2.87109,350——
1980-06-26$2.87$2.87114,750——
1980-06-25$2.94$2.94123,525——
1980-06-24$2.98$2.98147,825——
1980-06-23$2.98$2.9824,975——
1980-06-20$2.96$2.9671,550——
1980-06-19$2.94$2.9453,325——
1980-06-18$2.98$2.98293,625——
1980-06-17$3.00$3.00168,750——
1980-06-16$3.02$3.02509,625——
1980-06-13$3.00$3.00369,225——
1980-06-12$2.96$2.96213,300——
1980-06-11$2.91$2.91154,575——
1980-06-10$2.80$2.80238,275——
1980-06-09$2.72$2.72151,875——
1980-06-06$2.70$2.7088,425——
1980-06-05$2.74$2.74575,100——
1980-06-04$2.72$2.72102,600——
1980-06-03$2.72$2.72141,750——
1980-06-02$2.69$2.69118,800——