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 — 2009

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2009-12-31$38.34$80.71949,700
2009-12-30$38.74$81.55588,500
2009-12-29$38.77$81.62815,000
2009-12-28$38.67$81.401,047,700
2009-12-24$39.06$82.23389,200
2009-12-23$38.67$81.40903,500
2009-12-22$38.69$81.451,045,300
2009-12-21$38.12$80.251,831,400
2009-12-18$37.77$79.512,625,600
2009-12-17$37.89$79.761,963,400
2009-12-16$37.80$79.571,575,100
2009-12-15$37.86$79.702,160,400
2009-12-14$37.72$79.401,020,100
2009-12-11$37.73$79.431,895,700
2009-12-10$37.87$79.721,151,800
2009-12-09$37.92$79.831,234,000
2009-12-08$37.88$79.741,818,400
2009-12-07$38.38$80.791,690,200
2009-12-04$38.60$81.263,083,800
2009-12-03$38.31$80.653,127,800
2009-12-02$38.47$80.983,053,400
2009-12-01$38.60$81.261,612,200
2009-11-30$38.73$81.532,803,800
2009-11-27$38.39$80.821,037,300
2009-11-25$39.24$82.601,129,400
2009-11-24$39.14$82.391,458,900
2009-11-23$39.40$82.941,936,500
2009-11-20$39.03$82.162,782,600
2009-11-19$39.07$82.254,205,200
2009-11-18$40.04$84.292,555,900
2009-11-17$40.47$85.193,162,200
2009-11-16$40.92$86.143,008,400
2009-11-13$40.21$84.652,644,100
2009-11-12$40.12$84.463,282,300
2009-11-11$40.16$84.543,174,900
2009-11-10$39.68$83.533,356,800
2009-11-09$40.08$84.372,764,200
2009-11-06$39.40$82.942,851,100
2009-11-05$39.17$82.462,933,200
2009-11-04$38.57$81.193,597,400
2009-11-03$38.54$81.133,744,600
2009-11-02$38.78$81.644,453,900
2009-10-30$38.51$81.0712,143,600
2009-10-29$41.19$86.712,185,800
2009-10-28$40.43$84.791,967,800
2009-10-27$40.80$85.571,314,000
2009-10-26$40.80$85.572,080,100
2009-10-23$40.50$84.941,605,700
2009-10-22$41.03$86.052,428,700
2009-10-21$40.01$83.912,140,900
2009-10-20$40.54$85.022,058,800
2009-10-19$41.48$87.001,186,000
2009-10-16$41.46$86.951,985,500
2009-10-15$41.64$87.331,419,700
2009-10-14$41.78$87.632,074,100
2009-10-13$40.99$85.971,232,300
2009-10-12$41.01$86.011,015,800
2009-10-09$41.11$86.221,601,900
2009-10-08$41.05$86.091,435,000
2009-10-07$40.81$85.591,732,000
2009-10-06$41.01$86.012,101,500
2009-10-05$40.66$85.282,072,300
2009-10-02$40.35$84.632,464,200
2009-10-01$40.74$85.442,827,200
2009-09-30$40.69$85.342,825,700
2009-09-29$41.24$86.492,237,000
2009-09-28$42.08$88.252,815,300
2009-09-25$40.34$84.612,745,300
2009-09-24$40.84$85.652,165,000
2009-09-23$41.18$86.371,897,600
2009-09-22$41.06$86.121,776,600
2009-09-21$41.51$87.061,408,700
2009-09-18$41.72$87.502,438,600
2009-09-17$41.78$87.632,234,100
2009-09-16$42.44$89.012,492,400
2009-09-15$41.58$87.211,404,900
2009-09-14$41.87$87.811,728,500
2009-09-11$41.46$86.951,747,700
2009-09-10$42.11$88.321,955,900
2009-09-09$42.85$89.872,592,300
2009-09-08$41.94$87.962,191,400
2009-09-04$41.89$87.861,318,400
2009-09-03$41.50$87.041,582,300
2009-09-02$41.22$86.452,297,000
2009-09-01$41.20$86.412,898,200
2009-08-31$41.76$87.582,433,500
2009-08-28$42.06$88.212,556,400
2009-08-27$41.49$87.021,678,800
2009-08-26$41.55$87.141,647,800
2009-08-25$42.00$88.091,659,300
2009-08-24$42.00$88.092,653,600
2009-08-21$41.67$87.392,090,200
2009-08-20$41.52$87.081,725,700
2009-08-19$41.33$86.681,746,700
2009-08-18$41.27$86.562,594,000
2009-08-17$41.16$86.332,544,300
2009-08-14$41.20$86.412,074,200
2009-08-13$41.54$87.121,623,400
2009-08-12$41.58$87.212,478,400
2009-08-11$41.21$86.433,344,000
2009-08-10$40.55$85.052,206,000
2009-08-07$40.80$85.573,683,500
2009-08-06$40.16$84.232,949,800
2009-08-05$40.14$84.194,090,100
2009-08-04$39.90$83.682,981,000
2009-08-03$39.42$82.682,889,400
2009-07-31$39.45$82.742,736,200
2009-07-30$39.64$83.145,597,000
2009-07-29$39.89$83.355,601,300
2009-07-28$38.09$79.592,396,700
2009-07-27$37.41$78.172,587,100
2009-07-24$36.92$77.142,891,900
2009-07-23$37.16$77.643,421,000
2009-07-22$36.84$76.972,480,700
2009-07-21$37.13$77.582,215,300
2009-07-20$37.35$78.042,672,200
2009-07-17$37.72$78.812,620,600
2009-07-16$38.26$79.942,402,800
2009-07-15$37.93$79.253,378,500
2009-07-14$37.57$78.501,764,700
2009-07-13$37.51$78.373,435,000
2009-07-10$36.68$76.642,081,100
2009-07-09$36.83$76.952,184,100
2009-07-08$36.81$76.913,085,100
2009-07-07$36.59$76.452,244,800
2009-07-06$37.38$78.102,295,900
2009-07-02$36.56$76.392,150,500
2009-07-01$37.91$79.211,815,900
2009-06-30$37.87$79.132,504,000
2009-06-29$37.70$78.773,103,700
2009-06-26$37.00$77.312,181,700
2009-06-25$37.56$78.482,126,100
2009-06-24$37.20$77.732,577,600
2009-06-23$37.52$78.392,150,200
2009-06-22$37.43$78.213,251,300
2009-06-19$37.63$78.623,778,900
2009-06-18$36.96$77.221,794,000
2009-06-17$36.59$76.452,705,300
2009-06-16$36.24$75.724,000,300
2009-06-15$36.42$76.103,302,800
2009-06-12$36.99$77.292,114,300
2009-06-11$36.86$77.022,279,200
2009-06-10$36.77$76.831,980,100
2009-06-09$36.81$76.912,249,700
2009-06-08$36.61$76.492,050,700
2009-06-05$36.33$75.912,798,400
2009-06-04$36.06$75.343,458,800
2009-06-03$35.77$74.742,213,400
2009-06-02$35.82$74.844,070,100
2009-06-01$35.65$74.493,168,700
2009-05-29$36.00$75.223,289,700
2009-05-28$35.50$74.174,114,200
2009-05-27$35.26$73.673,449,600
2009-05-26$36.36$75.973,810,400
2009-05-22$35.64$74.473,532,100
2009-05-21$36.44$76.145,124,200
2009-05-20$36.48$76.226,308,000
2009-05-19$36.58$76.435,195,800
2009-05-18$37.52$78.393,802,700
2009-05-15$36.62$76.513,394,200
2009-05-14$36.66$76.604,460,400
2009-05-13$36.56$76.394,202,700
2009-05-12$36.71$76.704,573,500
2009-05-11$36.57$76.414,526,000
2009-05-08$37.00$77.314,906,900
2009-05-07$36.60$76.478,815,300
2009-05-06$37.88$79.156,224,200
2009-05-05$37.38$78.105,764,700
2009-05-04$36.93$77.168,018,400
2009-05-01$36.38$76.0120,410,300
2009-04-30$42.20$88.174,646,500
2009-04-29$41.43$86.563,384,500
2009-04-28$40.53$84.372,750,200
2009-04-27$41.27$85.913,675,700
2009-04-24$40.64$84.603,562,200
2009-04-23$40.86$85.063,129,700
2009-04-22$40.40$84.103,760,800
2009-04-21$41.71$86.833,885,600
2009-04-20$40.54$84.394,605,900
2009-04-17$41.35$86.086,019,300
2009-04-16$40.15$83.583,681,400
2009-04-15$39.46$82.143,422,100
2009-04-14$38.86$80.894,286,400
2009-04-13$39.52$82.272,859,800
2009-04-09$39.02$81.236,404,600
2009-04-08$38.84$80.853,236,900
2009-04-07$39.41$82.042,854,400
2009-04-06$39.90$83.062,598,800
2009-04-03$40.00$83.273,839,100
2009-04-02$40.16$83.607,152,500
2009-04-01$40.51$84.333,539,900
2009-03-31$40.82$84.974,355,200
2009-03-30$39.42$82.064,580,700
2009-03-27$40.00$83.274,465,300
2009-03-26$40.27$83.834,871,700
2009-03-25$40.29$83.875,865,200
2009-03-24$39.98$83.233,726,100
2009-03-23$40.87$85.085,084,400
2009-03-20$39.04$81.274,436,400
2009-03-19$38.93$81.044,581,900
2009-03-18$39.92$83.104,607,600
2009-03-17$38.74$80.644,255,600
2009-03-16$37.18$77.404,141,400
2009-03-13$38.93$81.043,355,900
2009-03-12$38.45$80.043,854,400
2009-03-11$37.49$78.044,493,000
2009-03-10$38.29$79.715,376,200
2009-03-09$38.72$80.603,544,100
2009-03-06$39.78$82.815,218,600
2009-03-05$38.31$79.757,130,800
2009-03-04$38.07$79.254,108,400
2009-03-03$37.29$77.634,446,300
2009-03-02$37.10$77.233,570,200
2009-02-27$38.24$79.604,703,200
2009-02-26$37.70$78.484,328,900
2009-02-25$38.57$80.295,187,900
2009-02-24$39.71$82.665,329,400
2009-02-23$39.00$81.194,478,200
2009-02-20$39.34$81.894,958,800
2009-02-19$39.20$81.606,430,300
2009-02-18$39.70$82.644,486,600
2009-02-17$39.17$81.543,585,100
2009-02-13$40.09$83.453,074,900
2009-02-12$41.35$86.083,550,400
2009-02-11$40.81$84.953,852,000
2009-02-10$39.83$82.914,465,600
2009-02-09$41.46$86.313,612,100
2009-02-06$40.62$84.567,466,000
2009-02-05$36.45$75.885,320,000
2009-02-04$37.41$77.886,224,700
2009-02-03$39.07$81.332,674,300
2009-02-02$38.31$79.753,658,200
2009-01-30$37.05$77.134,453,000
2009-01-29$37.96$79.023,730,900
2009-01-28$38.93$80.734,098,600
2009-01-27$38.35$79.535,192,800
2009-01-26$39.01$80.892,626,200
2009-01-23$39.70$82.324,157,000
2009-01-22$41.32$85.682,679,200
2009-01-21$42.79$88.733,089,200
2009-01-20$40.83$84.674,286,700
2009-01-16$41.59$86.243,247,700
2009-01-15$41.55$86.163,611,900
2009-01-14$40.93$84.883,442,900
2009-01-13$42.74$88.632,458,100
2009-01-12$42.94$89.042,806,400
2009-01-09$42.92$89.002,102,600
2009-01-08$43.39$89.982,270,400
2009-01-07$43.36$89.911,925,800
2009-01-06$43.79$90.812,254,900
2009-01-05$44.11$91.472,686,900
2009-01-02$45.12$93.562,307,800