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.

View year

Historical Stock Price — 2005

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2005-12-30$35.95$71.23539,400
2005-12-29$36.43$72.18705,100
2005-12-28$36.38$72.09649,100
2005-12-27$36.24$71.81823,000
2005-12-23$36.19$71.71354,900
2005-12-22$35.94$71.21972,900
2005-12-21$36.09$71.511,468,200
2005-12-20$36.16$71.65673,700
2005-12-19$35.83$71.00803,400
2005-12-16$36.15$71.631,599,500
2005-12-15$36.29$71.911,081,800
2005-12-14$36.56$72.441,527,400
2005-12-13$36.11$71.551,726,200
2005-12-12$35.50$70.341,313,900
2005-12-09$36.13$71.59827,200
2005-12-08$35.50$70.34844,000
2005-12-07$35.63$70.601,391,900
2005-12-06$35.77$70.881,317,000
2005-12-05$36.10$71.531,171,400
2005-12-02$36.63$72.58704,900
2005-12-01$36.57$72.462,573,800
2005-11-30$36.41$72.141,356,500
2005-11-29$36.70$72.721,828,400
2005-11-28$36.47$72.261,614,100
2005-11-25$36.35$72.03425,000
2005-11-23$36.43$72.181,308,600
2005-11-22$36.39$72.111,689,700
2005-11-21$36.35$72.032,610,600
2005-11-18$36.90$73.121,745,800
2005-11-17$36.84$73.001,335,800
2005-11-16$36.85$73.023,678,200
2005-11-15$35.77$70.881,794,200
2005-11-14$35.99$71.311,770,000
2005-11-11$35.51$70.361,220,200
2005-11-10$35.03$69.411,513,400
2005-11-09$35.15$69.651,757,700
2005-11-08$35.45$70.244,073,100
2005-11-07$35.42$70.183,149,700
2005-11-04$35.90$71.135,762,600
2005-11-03$34.33$68.021,605,400
2005-11-02$34.12$67.611,319,900
2005-11-01$33.86$67.091,679,000
2005-10-31$33.85$67.072,086,100
2005-10-28$33.87$67.111,856,300
2005-10-27$33.71$66.503,144,300
2005-10-26$33.95$66.972,256,000
2005-10-25$33.98$67.033,877,700
2005-10-24$33.37$65.831,695,800
2005-10-21$32.76$64.622,060,900
2005-10-20$32.65$64.412,727,700
2005-10-19$32.60$64.312,560,000
2005-10-18$31.23$61.611,190,400
2005-10-17$31.15$61.45856,700
2005-10-14$31.10$61.35899,700
2005-10-13$31.09$61.33917,800
2005-10-12$30.83$60.821,251,800
2005-10-11$31.19$61.531,111,300
2005-10-10$31.26$61.66563,900
2005-10-07$31.81$62.75921,600
2005-10-06$31.81$62.752,229,300
2005-10-05$32.22$63.562,443,900
2005-10-04$32.02$63.162,464,200
2005-10-03$31.93$62.991,508,000
2005-09-30$32.08$63.282,698,700
2005-09-29$32.28$63.68931,700
2005-09-28$31.36$61.861,220,600
2005-09-27$31.38$61.90919,100
2005-09-26$31.44$62.021,942,500
2005-09-23$32.14$63.401,600,500
2005-09-22$32.55$64.211,985,400
2005-09-21$32.34$63.802,734,300
2005-09-20$31.53$62.201,473,600
2005-09-19$31.81$62.751,064,200
2005-09-16$31.66$62.452,093,300
2005-09-15$32.00$63.121,435,000
2005-09-14$32.20$63.521,373,900
2005-09-13$32.25$63.623,703,700
2005-09-12$32.68$64.473,629,300
2005-09-09$31.21$61.573,335,400
2005-09-08$29.97$59.121,296,900
2005-09-07$30.30$59.771,136,400
2005-09-06$30.79$60.741,749,000
2005-09-02$30.63$60.421,190,700
2005-09-01$30.50$60.171,474,000
2005-08-31$29.92$59.021,353,700
2005-08-30$29.62$58.431,037,000
2005-08-29$29.91$59.001,529,800
2005-08-26$29.18$57.56867,500
2005-08-25$29.20$57.60569,400
2005-08-24$29.20$57.60773,400
2005-08-23$29.20$57.60820,300
2005-08-22$29.54$58.27565,900
2005-08-19$29.56$58.31784,400
2005-08-18$29.75$58.69814,700
2005-08-17$30.08$59.341,818,300
2005-08-16$29.53$58.251,080,500
2005-08-15$29.80$58.781,309,700
2005-08-12$29.50$58.191,263,800
2005-08-11$29.28$57.761,215,600
2005-08-10$29.51$58.211,403,600
2005-08-09$29.15$57.50738,800
2005-08-08$29.12$57.441,265,800
2005-08-05$29.14$57.481,524,800
2005-08-04$29.66$58.512,329,400
2005-08-03$29.88$58.948,124,700
2005-08-02$25.56$50.421,521,800
2005-08-01$25.35$50.01913,200
2005-07-29$25.44$50.18752,600
2005-07-28$25.57$50.141,031,100
2005-07-27$25.50$50.011,498,100
2005-07-26$25.17$49.36832,400
2005-07-25$25.33$49.67616,000
2005-07-22$25.48$49.97571,700
2005-07-21$25.38$49.77725,000
2005-07-20$25.57$50.14911,300
2005-07-19$25.64$50.281,382,300
2005-07-18$25.57$50.142,394,300
2005-07-15$25.85$50.692,448,300
2005-07-14$25.45$49.911,349,400
2005-07-13$25.50$50.011,236,000
2005-07-12$25.45$49.91993,100
2005-07-11$25.50$50.011,182,500
2005-07-08$25.50$50.011,492,500
2005-07-07$25.50$50.011,715,200
2005-07-06$25.37$49.751,609,800
2005-07-05$25.55$50.112,069,500
2005-07-01$25.17$49.36826,300
2005-06-30$25.04$49.111,168,400
2005-06-29$25.01$49.051,013,700
2005-06-28$25.12$49.261,366,600
2005-06-27$24.66$48.361,845,400
2005-06-24$24.35$47.751,398,700
2005-06-23$24.47$47.991,587,600
2005-06-22$24.85$48.731,264,100
2005-06-21$24.81$48.651,064,900
2005-06-20$24.70$48.44707,300
2005-06-17$24.84$48.71959,000
2005-06-16$24.58$48.20805,700
2005-06-15$24.67$48.38987,000
2005-06-14$24.76$48.56920,700
2005-06-13$24.55$48.14854,900
2005-06-10$24.70$48.44966,100
2005-06-09$24.64$48.32960,400
2005-06-08$24.62$48.281,654,800
2005-06-07$24.47$47.991,722,900
2005-06-06$24.52$48.09813,100
2005-06-03$24.69$48.421,005,300
2005-06-02$24.97$48.972,145,300
2005-06-01$24.82$48.671,397,100
2005-05-31$24.93$48.891,214,100
2005-05-27$25.00$49.031,226,500
2005-05-26$24.90$48.831,549,900
2005-05-25$24.95$48.931,421,800
2005-05-24$25.22$49.463,409,200
2005-05-23$25.07$49.161,857,900
2005-05-20$24.81$48.651,241,400
2005-05-19$24.71$48.461,170,900
2005-05-18$24.50$48.052,230,400
2005-05-17$24.30$47.651,484,400
2005-05-16$24.18$47.421,393,000
2005-05-13$23.99$47.051,936,500
2005-05-12$24.56$48.162,589,800
2005-05-11$24.97$48.971,241,300
2005-05-10$24.68$48.401,360,100
2005-05-09$24.94$48.911,694,100
2005-05-06$24.22$47.501,399,200
2005-05-05$24.45$47.952,826,000
2005-05-04$24.45$47.957,760,800
2005-05-03$21.27$41.712,399,200
2005-05-02$21.16$41.502,818,800
2005-04-29$20.85$40.892,103,900
2005-04-28$21.06$41.011,418,800
2005-04-27$21.38$41.63968,500
2005-04-26$21.60$42.061,345,100
2005-04-25$21.89$42.62630,000
2005-04-22$21.51$41.88798,900
2005-04-21$21.78$42.411,936,300
2005-04-20$21.31$41.491,084,000
2005-04-19$21.47$41.80688,900
2005-04-18$21.58$42.02749,000
2005-04-15$21.42$41.711,192,100
2005-04-14$22.13$43.091,105,600
2005-04-13$22.44$43.69821,800
2005-04-12$22.99$44.761,087,200
2005-04-11$22.87$44.531,753,100
2005-04-08$22.65$44.10793,000
2005-04-07$22.58$43.971,040,000
2005-04-06$22.46$43.733,066,200
2005-04-05$22.23$43.281,209,500
2005-04-04$22.60$44.002,099,000
2005-04-01$22.53$43.87938,900
2005-03-31$22.84$44.471,052,500
2005-03-30$23.05$44.881,215,500
2005-03-29$22.82$44.432,075,400
2005-03-28$22.81$44.411,028,600
2005-03-24$22.42$43.651,150,400
2005-03-23$22.66$44.12871,000
2005-03-22$22.77$44.341,376,900
2005-03-21$23.12$45.021,205,200
2005-03-18$22.80$44.392,326,700
2005-03-17$23.19$45.151,236,800
2005-03-16$23.57$45.891,011,400
2005-03-15$23.95$46.63862,300
2005-03-14$24.18$47.08475,900
2005-03-11$23.81$46.36648,100
2005-03-10$24.18$47.08763,000
2005-03-09$24.04$46.811,118,700
2005-03-08$24.30$47.311,534,800
2005-03-07$24.94$48.561,724,700
2005-03-04$24.45$47.611,712,200
2005-03-03$24.17$47.06890,500
2005-03-02$24.24$47.201,261,400
2005-03-01$24.45$47.611,677,800
2005-02-28$24.51$47.721,043,700
2005-02-25$24.74$48.171,186,700
2005-02-24$24.43$47.571,471,000
2005-02-23$24.30$47.31957,400
2005-02-22$24.39$47.491,028,400
2005-02-18$24.56$47.821,181,800
2005-02-17$24.50$47.701,428,100
2005-02-16$25.09$48.851,342,200
2005-02-15$25.37$49.401,040,000
2005-02-14$25.03$48.741,499,700
2005-02-11$25.24$49.142,398,900
2005-02-10$24.10$46.932,992,400
2005-02-09$24.52$47.746,344,400
2005-02-08$22.55$43.911,046,800
2005-02-07$22.56$43.931,670,900
2005-02-04$22.52$43.851,702,800
2005-02-03$22.44$43.691,453,900
2005-02-02$22.82$44.431,116,400
2005-02-01$22.79$44.371,886,200
2005-01-31$22.74$43.982,523,500
2005-01-28$21.68$41.931,308,000
2005-01-27$21.79$42.151,442,100
2005-01-26$21.59$41.762,124,900
2005-01-25$21.82$42.211,561,500
2005-01-24$22.11$42.77878,900
2005-01-21$22.40$43.33959,000
2005-01-20$22.55$43.621,162,700
2005-01-19$22.88$44.26953,400
2005-01-18$22.90$44.291,146,000
2005-01-14$22.90$44.29891,100
2005-01-13$22.72$43.951,308,500
2005-01-12$23.03$44.55828,400
2005-01-11$22.85$44.201,141,700
2005-01-10$23.08$44.641,289,600
2005-01-07$22.83$44.161,784,500
2005-01-06$23.31$45.091,918,600
2005-01-05$22.73$43.972,484,500
2005-01-04$23.36$45.181,622,700
2005-01-03$23.58$45.611,874,000