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 — 2017

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2017-12-29$134.00$310.77723,800
2017-12-28$134.52$311.97772,000
2017-12-27$133.92$310.58753,000
2017-12-26$133.30$309.14510,600
2017-12-22$133.35$309.261,389,900
2017-12-21$135.34$313.87884,100
2017-12-20$136.39$316.31842,600
2017-12-19$136.87$317.421,298,900
2017-12-18$137.19$318.171,477,000
2017-12-15$138.39$320.953,056,900
2017-12-14$136.58$316.751,449,900
2017-12-13$136.56$316.701,236,400
2017-12-12$138.50$321.201,081,400
2017-12-11$138.30$320.741,041,500
2017-12-08$138.49$321.18663,200
2017-12-07$138.46$321.11966,100
2017-12-06$139.11$322.62760,500
2017-12-05$139.24$322.921,010,800
2017-12-04$139.67$323.921,501,300
2017-12-01$142.24$329.881,571,300
2017-11-30$140.22$325.192,817,200
2017-11-29$140.47$325.77961,600
2017-11-28$139.94$324.54943,900
2017-11-27$138.12$320.321,384,100
2017-11-24$138.63$321.50884,100
2017-11-22$139.24$322.921,042,100
2017-11-21$141.44$328.021,358,700
2017-11-20$142.05$329.441,031,500
2017-11-17$141.18$327.42912,100
2017-11-16$141.28$327.651,026,900
2017-11-15$142.83$331.25963,900
2017-11-14$143.54$332.89799,200
2017-11-13$141.89$329.07971,800
2017-11-10$143.25$332.22995,700
2017-11-09$143.46$332.711,375,000
2017-11-08$140.87$326.701,364,600
2017-11-07$140.21$325.171,212,500
2017-11-06$140.18$325.101,411,400
2017-11-03$138.64$321.531,614,200
2017-11-02$138.96$322.272,834,300
2017-11-01$142.84$331.271,085,700
2017-10-31$143.43$332.641,491,400
2017-10-30$143.45$331.851,532,600
2017-10-27$146.18$338.161,738,700
2017-10-26$151.21$349.801,510,200
2017-10-25$151.65$350.82928,300
2017-10-24$152.38$352.51790,500
2017-10-23$151.94$351.49650,300
2017-10-20$151.54$350.56773,200
2017-10-19$150.82$348.90637,300
2017-10-18$149.60$346.08998,200
2017-10-17$149.20$345.15852,000
2017-10-16$149.95$346.89521,700
2017-10-13$149.38$345.57694,400
2017-10-12$149.24$345.241,461,400
2017-10-11$147.77$341.84801,100
2017-10-10$147.63$341.52830,300
2017-10-09$147.35$340.87555,000
2017-10-06$146.84$339.69752,200
2017-10-05$146.64$339.231,394,100
2017-10-04$146.65$339.25785,700
2017-10-03$147.31$340.78712,800
2017-10-02$147.29$340.73930,900
2017-09-29$146.10$337.981,292,900
2017-09-28$146.95$339.951,033,800
2017-09-27$146.43$338.74971,500
2017-09-26$146.28$338.401,486,000
2017-09-25$145.22$335.94804,100
2017-09-22$146.02$337.79778,900
2017-09-21$144.94$335.301,123,700
2017-09-20$145.98$337.701,137,300
2017-09-19$144.44$334.141,182,100
2017-09-18$144.05$333.24852,700
2017-09-15$143.31$331.522,573,200
2017-09-14$142.14$328.821,138,000
2017-09-13$142.99$330.78933,400
2017-09-12$142.89$330.55875,300
2017-09-11$142.66$330.021,290,600
2017-09-08$142.64$329.971,630,600
2017-09-07$138.61$320.651,142,700
2017-09-06$140.23$324.401,072,400
2017-09-05$140.35$324.681,361,200
2017-09-01$138.86$321.23825,000
2017-08-31$139.16$321.921,403,700
2017-08-30$138.15$319.59733,900
2017-08-29$137.90$319.01944,400
2017-08-28$138.38$320.12656,700
2017-08-25$138.05$319.36726,300
2017-08-24$137.78$318.73724,800
2017-08-23$138.22$319.75807,000
2017-08-22$139.57$322.871,153,900
2017-08-21$138.17$319.631,278,900
2017-08-18$136.52$315.821,345,600
2017-08-17$136.70$316.231,210,400
2017-08-16$139.32$322.29883,600
2017-08-15$139.28$322.20838,600
2017-08-14$139.66$323.08680,800
2017-08-11$138.39$320.14708,800
2017-08-10$138.85$321.21842,300
2017-08-09$140.19$324.31755,400
2017-08-08$138.58$320.581,034,000
2017-08-07$138.77$321.02944,900
2017-08-04$138.95$321.441,109,900
2017-08-03$138.97$321.481,429,700
2017-08-02$139.23$322.091,425,800
2017-08-01$139.59$322.92980,400
2017-07-31$138.17$319.63898,200
2017-07-28$138.67$320.791,046,600
2017-07-27$135.91$313.571,623,000
2017-07-26$138.95$320.59797,700
2017-07-25$140.00$323.01773,500
2017-07-24$139.63$322.161,076,800
2017-07-21$139.14$321.03807,400
2017-07-20$138.84$320.33769,900
2017-07-19$138.07$318.56694,600
2017-07-18$137.41$317.03600,300
2017-07-17$136.84$315.72816,800
2017-07-14$136.22$314.29872,900
2017-07-13$135.63$312.93740,300
2017-07-12$134.66$310.69809,800
2017-07-11$134.04$309.26815,200
2017-07-10$135.30$312.17966,700
2017-07-07$135.01$311.50914,100
2017-07-06$133.39$307.761,191,200
2017-07-05$132.97$306.791,275,600
2017-07-03$133.16$307.23558,600
2017-06-30$132.95$306.741,535,900
2017-06-29$132.84$306.49947,300
2017-06-28$133.98$309.12814,700
2017-06-27$132.58$305.891,065,300
2017-06-26$133.03$306.931,264,100
2017-06-23$132.40$305.471,889,000
2017-06-22$134.25$309.741,072,000
2017-06-21$135.30$312.171,580,200
2017-06-20$136.15$314.131,247,800
2017-06-19$136.80$315.631,233,900
2017-06-16$136.46$314.841,519,500
2017-06-15$135.65$312.97986,800
2017-06-14$135.01$311.50995,800
2017-06-13$134.06$309.301,755,100
2017-06-12$133.03$306.931,431,300
2017-06-09$132.64$306.031,219,900
2017-06-08$131.71$303.881,138,200
2017-06-07$131.41$303.191,216,900
2017-06-06$130.46$301.001,138,000
2017-06-05$131.00$302.241,597,600
2017-06-02$131.40$303.172,006,600
2017-06-01$131.64$303.721,071,100
2017-05-31$130.91$302.041,891,100
2017-05-30$130.71$301.58902,400
2017-05-26$130.01$299.96961,300
2017-05-25$130.32$300.681,309,100
2017-05-24$129.19$298.071,070,100
2017-05-23$128.56$296.621,623,300
2017-05-22$128.37$296.181,676,700
2017-05-19$127.28$293.661,221,200
2017-05-18$126.69$292.301,612,400
2017-05-17$125.98$290.661,543,400
2017-05-16$125.98$290.661,009,900
2017-05-15$125.76$290.151,080,800
2017-05-12$124.24$286.651,224,900
2017-05-11$124.30$286.791,403,800
2017-05-10$124.09$286.301,486,800
2017-05-09$124.30$286.791,977,800
2017-05-08$122.81$283.351,606,300
2017-05-05$122.27$282.101,207,000
2017-05-04$121.20$279.63824,000
2017-05-03$120.34$277.65620,300
2017-05-02$119.92$276.681,055,900
2017-05-01$120.29$277.531,049,300
2017-04-28$119.84$276.50869,800
2017-04-27$120.14$277.19847,800
2017-04-26$120.07$276.20768,100
2017-04-25$120.07$276.20719,200
2017-04-24$119.04$273.832,034,600
2017-04-21$118.43$272.421,327,000
2017-04-20$120.56$277.321,208,300
2017-04-19$119.12$274.01926,200
2017-04-18$118.86$273.41832,700
2017-04-17$119.05$273.85957,200
2017-04-13$118.10$271.66651,800
2017-04-12$118.67$272.98897,000
2017-04-11$119.73$275.41795,900
2017-04-10$119.76$275.48975,600
2017-04-07$119.64$275.211,223,900
2017-04-06$119.39$274.63826,700
2017-04-05$119.23$274.261,056,400
2017-04-04$118.90$273.50927,300
2017-04-03$118.33$272.191,192,900
2017-03-31$118.69$273.021,183,400
2017-03-30$118.48$272.541,042,400
2017-03-29$117.76$270.88692,000
2017-03-28$118.88$273.461,014,700
2017-03-27$118.19$271.871,132,400
2017-03-24$117.54$270.38807,600
2017-03-23$117.48$270.24841,900
2017-03-22$117.71$270.77893,300
2017-03-21$117.57$270.451,143,300
2017-03-20$118.18$271.85736,300
2017-03-17$118.91$273.531,203,200
2017-03-16$119.24$274.29960,700
2017-03-15$119.02$273.781,248,800
2017-03-14$118.42$272.40782,500
2017-03-13$118.94$273.601,496,200
2017-03-10$117.86$271.111,582,600
2017-03-09$116.33$267.591,175,300
2017-03-08$115.62$265.961,046,200
2017-03-07$115.54$265.78774,100
2017-03-06$115.71$266.17728,900
2017-03-03$116.48$267.94762,400
2017-03-02$116.46$267.89783,900
2017-03-01$117.51$270.31916,200
2017-02-28$115.65$266.031,212,400
2017-02-27$116.37$267.69494,200
2017-02-24$116.56$268.12712,700
2017-02-23$116.19$267.27898,200
2017-02-22$115.60$265.911,090,400
2017-02-21$115.57$265.841,471,100
2017-02-17$117.53$270.35962,700
2017-02-16$117.28$269.78719,400
2017-02-15$116.56$268.12739,700
2017-02-14$115.85$266.49793,100
2017-02-13$115.87$266.53950,200
2017-02-10$115.59$265.891,213,000
2017-02-09$115.17$264.921,028,400
2017-02-08$114.36$263.06752,800
2017-02-07$114.25$262.81808,700
2017-02-06$114.08$262.42783,000
2017-02-03$114.06$262.371,426,600
2017-02-02$112.48$258.741,334,400
2017-02-01$111.17$255.721,750,800
2017-01-31$112.70$259.241,199,300
2017-01-30$112.07$257.79876,200
2017-01-27$113.39$260.07854,300
2017-01-26$112.95$259.06930,400
2017-01-25$112.84$258.811,361,400
2017-01-24$112.21$257.361,251,500
2017-01-23$111.70$256.19763,600
2017-01-20$112.07$257.041,580,000
2017-01-19$112.28$257.531,982,600
2017-01-18$114.05$261.58960,300
2017-01-17$113.62$260.60901,500
2017-01-13$113.29$259.84598,500
2017-01-12$112.67$258.42695,200
2017-01-11$112.67$258.421,079,500
2017-01-10$112.63$258.33844,200
2017-01-09$113.40$260.09727,100
2017-01-06$114.35$262.27642,000
2017-01-05$113.48$260.28792,300
2017-01-04$113.31$259.89962,400
2017-01-03$112.08$257.07839,000