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Aon plc (AON) stock

AONNYSEInsurance Agents, Brokers & ServiceFiscal year ends December 31
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Oct 28, 2026Score 21/3033% below fair value
$321.67+0.03 (+0.01%)

Close on Oct 30, 2026Market cap $68.23BP/E 17.7Yield 0.90%

Price history

Aon share prices for every week, newest first. Adjusted for stock splits, not for dividends.

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Close, Oct 30, 2026
$321.67
+0.01% on the day
52-week range
$266.33 – $382.34
-15.9% from the high
Change over 52 weeks
-2.0%
From $328.19 on Oct 30, 2025
Average volume
1.61M
Shares a day, last 90 sessions
Week ofOpenHighLowCloseChangeVolume
Oct 26, 2026$302.61$329.43$295.52$321.67+5.98%10,899,592
Oct 19, 2026$289.03$307.67$287.18$303.52+3.75%6,754,163
Oct 12, 2026$274.87$292.73$272.04$292.55+6.98%8,998,078
Oct 5, 2026$267.59$277.90$266.33$273.47+1.49%8,178,068
Sep 28, 2026$277.50$279.49$268.90$269.45-3.07%9,758,892
Sep 21, 2026$297.01$297.87$275.38$277.99-5.97%10,631,792
Sep 14, 2026$308.08$312.39$293.00$295.64-2.33%14,333,956
Sep 8, 2026$316.78$321.57$302.44$302.69-6.31%8,880,591
Aug 31, 2026$340.00$343.26$312.92$323.09-9.09%9,979,792
Aug 24, 2026$358.52$361.73$348.03$355.40+0.08%3,195,374
Aug 17, 2026$354.00$356.86$341.75$355.11-0.20%3,727,251
Aug 10, 2026$357.71$359.98$349.33$355.83-0.69%3,249,149
Aug 3, 2026$362.04$366.32$350.23$358.30-0.62%6,109,602
Jul 27, 2026$362.03$382.34$358.49$360.55-0.32%10,652,921
Jul 20, 2026$364.87$366.00$350.83$361.70-1.50%6,221,506
Jul 13, 2026$360.12$375.92$350.46$367.21+2.88%6,337,086
Jul 6, 2026$356.71$366.45$351.38$356.94-0.15%4,290,501
Jun 29, 2026$324.97$357.54$322.26$357.46+8.75%6,072,826
Jun 22, 2026$316.51$330.36$313.62$328.69+3.45%14,153,006
Jun 15, 2026$336.71$338.21$317.48$317.74-5.24%7,291,055
Jun 8, 2026$325.49$340.76$321.55$335.31+2.06%7,984,999
Jun 1, 2026$313.78$331.13$311.07$328.53+3.95%7,021,675
May 26, 2026$326.27$326.38$314.54$316.06-2.68%6,692,765
May 18, 2026$317.51$330.22$315.00$324.78+2.38%6,950,951
May 11, 2026$312.42$321.69$308.51$317.22+1.42%8,261,428
May 4, 2026$309.93$317.49$306.52$312.79+0.41%7,074,152
Apr 27, 2026$319.53$328.95$307.02$311.51-3.00%8,155,543
Apr 20, 2026$331.45$336.89$318.64$321.14-3.21%4,991,691
Apr 13, 2026$315.00$337.98$313.00$331.80+6.15%6,563,210
Apr 6, 2026$321.21$330.93$307.81$312.57-3.27%7,181,265
Mar 30, 2026$316.45$328.79$315.66$323.14+3.02%4,836,113
Mar 23, 2026$327.99$328.84$312.05$313.66-3.68%5,993,382
Mar 16, 2026$322.60$333.26$314.80$325.63+1.31%7,366,086
Mar 9, 2026$341.55$342.38$313.81$321.41-5.63%7,430,842
Mar 2, 2026$332.02$344.65$331.71$340.60+1.53%7,454,823
Feb 23, 2026$324.71$337.97$312.58$335.47+3.20%7,495,760
Feb 17, 2026$324.85$329.57$320.00$325.07+1.05%5,315,388
Feb 9, 2026$340.76$343.92$304.59$321.70-5.95%15,860,588
Feb 2, 2026$353.14$358.04$340.58$342.04-2.17%6,658,745
Jan 26, 2026$339.32$351.80$325.90$349.64+3.23%7,916,533
Jan 20, 2026$341.38$342.97$330.30$338.69-1.50%5,662,515
Jan 12, 2026$351.00$353.93$340.60$343.86-1.98%4,900,434
Jan 5, 2026$340.91$355.43$339.39$350.80+1.90%4,721,433
Dec 29, 2025$356.66$358.55$342.75$344.27-3.47%2,107,266
Dec 22, 2025$348.87$358.14$348.00$356.65+1.89%2,010,570
Dec 15, 2025$353.71$355.33$349.91$350.04-1.06%6,415,337
Dec 8, 2025$343.23$354.12$336.43$353.79+2.49%5,261,718
Dec 1, 2025$352.69$355.48$340.19$345.20-2.46%4,746,733
Nov 24, 2025$347.23$355.62$342.80$353.92+2.14%3,404,789
Nov 17, 2025$350.00$353.00$339.17$346.51-1.03%7,242,032
Nov 10, 2025$343.34$354.24$341.02$350.13+1.10%5,525,816
Nov 3, 2025$339.42$348.18$331.14$346.32+1.66%6,291,857

Seasonality

AON return in each calendar month over the last 10 years, including dividends. The current month runs to the latest close.

YearJanFebMarAprMayJunJulAugSepOctNovDec
Average2.1%3.1%-0.3%-1.5%1.9%1.4%4.4%1.1%-1.0%2.1%4.4%-3.6%
Months up7 of 106 of 106 of 106 of 105 of 105 of 107 of 107 of 104 of 106 of 107 of 93 of 9
2026-0.9%-4.1%-3.8%-3.4%1.7%4.9%8.7%-10.6%-13.9%16.2%
20253.2%10.5%-2.5%-11.1%5.1%-4.1%-0.3%3.4%-2.8%-4.5%3.9%-0.3%
20242.8%5.9%5.6%-15.3%-0.1%4.2%11.9%4.8%0.7%6.0%6.9%-8.3%
20236.4%-4.6%3.7%3.3%-5.2%12.0%-7.6%4.7%-2.8%-4.4%6.2%-11.4%
2022-7.9%5.7%11.5%-11.4%-4.3%-2.2%8.1%-4.0%-4.1%5.3%9.5%-2.6%
2021-3.7%12.1%1.1%9.5%0.8%-5.8%9.1%10.3%-0.4%12.1%-7.5%1.6%
20206.0%-5.6%-20.7%4.9%14.1%-2.2%6.8%-2.5%3.2%-10.6%11.3%3.1%
20197.8%9.8%-0.5%5.8%-0.0%7.2%-1.7%3.0%-0.7%0.0%5.4%2.3%
20186.4%-1.3%0.0%1.8%-1.8%-1.9%4.9%1.7%5.6%1.8%5.7%-12.0%
20171.3%2.6%2.6%1.3%9.2%1.6%4.2%0.7%5.0%-1.6%-2.2%-4.4%