AONNYSEInsurance Agents, Brokers & ServiceFiscal year ends December 31
Aon plc
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Jul 29, 2026
$289.74−2.81 (-0.96%)
Close on Oct 19, 2026
- Market cap
- $61.98B
- P/E (TTM)
- 16.0
- Dividend yield
- 1.00%
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
90.9%
193M of 212M shares
Institutional holders
1,256
138 new, 113 sold out
Net institutional buying
5M
In Q2 2026
Insider trades, 12 months
7 buys · 11 sales
Net bought $75.80K
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Vanguard Capital Management | 15,687,441 | 7.32% | 13G (passive) | Mar 31, 2026 |
| JPMorgan Chase & Co. | 14,312,078 | 6.70% | 13G (passive) amendment | Sep 30, 2026 |
| BlackRock, Inc. | 13,428,205 | 6.70% | 13G (passive) amendment | Dec 31, 2023 |
| JPMorgan Chase & Co | 12,173,339 | 5.60% | 13G (passive) | Jun 30, 2026 |
| Capital World Investors | 12,142,251 | 5.60% | 13G (passive) | Sep 30, 2024 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of AON | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| BlackRock, Inc. | 15,716,429 | 7.41% | $5.21B | −432,078 | 0.08% |
| Vanguard Capital Management LLC | 13,603,465 | 6.41% | $4.51B | +21,709 | 0.10% |
| JPMorgan Chase & Co | 12,175,974 | 5.74% | $3.99B | +6,534,543 | 0.22% |
| Capital World Investors | 11,711,650 | 5.52% | $3.88B | +233,862 | 0.46% |
| State Street Corp | 9,416,039 | 4.44% | $3.12B | +196,266 | 0.09% |
| Dodge & Cox | 8,593,144 | 4.05% | $2.85B | +477,049 | 1.49% |
| Massachusetts Financial Services Co /Ma/ | 7,615,397 | 3.59% | $2.58B | −742,700 | 0.82% |
| Vanguard Portfolio Management LLC | 7,202,991 | 3.40% | $2.39B | +2,643,956 | 0.11% |
| Morgan Stanley | 6,214,787 | 2.93% | $2.06B | −160,158 | 0.11% |
| Geode Capital Management, LLC | 5,180,553 | 2.44% | $1.71B | −63,756 | 0.09% |
| Bank of New York Mellon Corp | 3,191,212 | 1.50% | $1.06B | −129,880 | 0.17% |
| Price T Rowe Associates Inc /Md/ | 3,136,640 | 1.48% | $1.04M | +1,855,714 | 0.10% |
| Norges Bank | 2,796,760 | 1.32% | $927.66M | New | 0.09% |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 2,753,913 | 1.30% | $913.45M | +237,276 | 0.51% |
| Independent Franchise Partners LLP | 2,646,943 | 1.25% | $877.96M | +58,941 | 5.76% |
| Arrowstreet Capital, Limited Partnership | 2,614,754 | 1.23% | $867.29M | +1,817,336 | 0.38% |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 2,255,768 | 1.06% | $748.22M | −692,642 | 0.57% |
| Boston Partners | 2,089,773 | 0.99% | $695.75M | +134,741 | 0.62% |
| Northern Trust Corp | 2,040,534 | 0.96% | $676.82M | −41,571 | 0.08% |
| Aqr Capital Management LLC | 1,905,800 | 0.90% | $623.01M | +926,045 | 0.22% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 1,256 | 193M | 90.9% | 138 / 471 | 457 / 113 | 24M | 18M |
| Q1 2026 | 1,254 | 188M | 88.5% | 142 / 482 | 419 / 148 | 38M | 19M |
| Q4 2025 | 1,278 | 189M | 89.3% | 156 / 424 | 477 / 100 | 17M | 17M |
| Q3 2025 | 1,245 | 190M | 89.4% | 128 / 481 | 398 / 86 | 17M | 18M |
| Q2 2025 | 1,222 | 195M | 91.8% | 108 / 432 | 469 / 135 | 14M | 13M |
| Q1 2025 | 1,264 | 194M | 91.5% | 169 / 467 | 397 / 69 | 15M | 15M |
| Q4 2024 | 1,183 | 195M | 92.1% | 141 / 417 | 407 / 83 | 14M | 14M |
| Q3 2024 | 1,139 | 196M | 92.2% | 131 / 408 | 374 / 79 | 29M | 9M |
| Q2 2024 | 1,100 | 191M | 90.1% | 134 / 392 | 374 / 96 | 29M | 25M |
| Q1 2024 | 1,073 | 187M | 88.3% | 132 / 355 | 411 / 97 | 21M | 12M |
| Q4 2023 | 1,053 | 178M | 84.0% | 123 / 340 | 399 / 88 | 17M | 13M |
| Q3 2023 | 1,035 | 174M | 81.9% | 100 / 358 | 377 / 66 | 6M | 9M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of AON | Value | % of fund | As of |
|---|---|---|---|---|---|
| Vanguard Total Stock Market Index Fund | 6,442,152 | 3.04% | $2.14B | 0.09% | Jun 30, 2026 |
| Vanguard 500 Index Fund | 5,535,004 | 2.61% | $1.84B | 0.11% | Jun 30, 2026 |
| Dodge & Cox Stock Fund | 3,684,200 | 1.74% | $1.22B | 1.03% | Jun 30, 2026 |
| Dodge & Cox International Stock Fund | 2,553,000 | 1.20% | $846.80M | 1.25% | Jun 30, 2026 |
| Vanguard Mid-Cap Index Fund | 2,198,119 | 1.04% | $729.09M | 0.33% | Jun 30, 2026 |
| Vanguard Value Index Fund | 1,931,138 | 0.91% | $640.54M | 0.25% | Jun 30, 2026 |
| Vanguard Dividend Appreciation Index Fund | 1,208,405 | 0.57% | $435.69M | 0.33% | Jul 31, 2026 |
| Vanguard Institutional Index Fund | 1,159,435 | 0.55% | $384.57M | 0.11% | Jun 30, 2026 |
| WCM Focused International Growth Fund | 747,970 | 0.35% | $248.09M | 1.10% | Jun 30, 2026 |
| Vanguard Mid-Cap Value Index Fund | 651,593 | 0.31% | $216.13M | 0.58% | Jun 30, 2026 |
| Disciplined Value Fund | 563,595 | 0.27% | $186.94M | 0.96% | Jun 30, 2026 |
| Invesco S&P 500 Equal Weight ETF | 554,573 | 0.26% | $199.95M | 0.21% | Jul 31, 2026 |
| FPA Crescent Fund | 477,656 | 0.23% | $158.43M | 1.27% | Jun 30, 2026 |
| iShares Russell 1000 Value ETF | 464,810 | 0.22% | $154.17M | 0.19% | Jun 30, 2026 |
| Dodge & Cox Balanced Fund | 357,700 | 0.17% | $118.65M | 0.80% | Jun 30, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Gregory C. Case | President & CEO, Director | 1,779,432 | 0.84% | Feb 20, 2026 |
| Nadin Virani | Interim CFO | 1,014 | 0.00% | Aug 26, 2026 |
| Darren Zeidel | General Counsel | 12,704 | 0.01% | Jul 30, 2026 |
| Edmund Reese | Chief Financial Officer | 3,901 | 0.00% | Jul 6, 2026 |
| Andy Marcell | Global CEO, Solution Lines | 9,046 | 0.00% | Mar 17, 2026 |
| Lori Goltermann | CEO, Regions & North America | 6,731 | 0.00% | Mar 17, 2026 |
| Anne Corona | Chief Commercial Officer | 4,195 | 0.00% | Mar 17, 2026 |
| Lisa Stevens | Chief Administrative Officer | 26,321 | 0.01% | Feb 19, 2026 |
| Mindy F. Simon | Chief Operating Officer | 6,605 | 0.00% | Feb 17, 2026 |
| David J. Debrunner | Principal Accounting Officer | 0 | – | Sep 23, 2025 |
| Michael Neller | Principal Accounting Officer | 10,870 | 0.01% | Mar 25, 2025 |
| Eric Andersen | President | 176,173 | 0.08% | Feb 18, 2025 |
| Lester B. Knight | Director | 388,076 | 0.18% | Sep 3, 2026 |
| Jose Antonio Alvarez | Director | 1,270 | 0.00% | Jun 29, 2026 |
| Jeffrey C. Campbell | Director | 12,621 | 0.01% | Jun 29, 2026 |
| Jo Ann Jenkins | Director | 1,060 | 0.00% | Jun 29, 2026 |
| Byron Spruell | Director | 6,563 | 0.00% | Jun 29, 2026 |
| Adriana Karaboutis | Director | 2,792 | 0.00% | Jun 29, 2026 |
| Jin-Yong Cai | Director | 8,241 | 0.00% | Jun 29, 2026 |
| Richard C. Notebaert | Director | 41,857 | 0.02% | Jun 29, 2026 |
| Gloria Santona | Director | 40,384 | 0.02% | Jun 29, 2026 |
| James G. Stavridis | Director | 6,415 | 0.00% | Jun 29, 2026 |
| Cheryl A. Francis | Director | 34,382 | 0.02% | Jun 29, 2026 |
| Sarah G. Smith | Director | 2,127 | 0.00% | Jun 29, 2026 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Lester B. Knight Director | Sep 2, 2026 | Buy | +367 | $330.51 | $121.30K | 163,000 |
| Lester B. Knight Director | Sep 2, 2026 | Buy | +7,212 | $327.52 | $2.36M | 157,048 |
| Lester B. Knight Director | Sep 2, 2026 | Buy | +5,097 | $326.53 | $1.66M | 149,836 |
| Lester B. Knight Director | Sep 2, 2026 | Buy | +1,739 | $325.63 | $566.27K | 144,739 |
| Lester B. Knight Director | Sep 2, 2026 | Buy | +1,440 | $329.69 | $474.75K | 162,633 |
| Lester B. Knight Director | Sep 2, 2026 | Buy | +4,145 | $328.34 | $1.36M | 161,193 |
| Darren Zeidel General Counsel | Jul 28, 2026 | Sale(10b5-1 plan) | −700 | $376.00 | $263.20K | 12,704 |
| Darren Zeidel General Counsel | Jul 28, 2026 | Sale(10b5-1 plan) | −725 | $378.00 | $274.05K | 11,979 |
| Darren Zeidel General Counsel | Jul 28, 2026 | Sale(10b5-1 plan) | −475 | $380.00 | $180.50K | 11,504 |
| Darren Zeidel General Counsel | Jul 17, 2026 | Sale(10b5-1 plan) | −650 | $372.00 | $241.80K | 14,079 |
| Darren Zeidel General Counsel | Jul 17, 2026 | Sale(10b5-1 plan) | −675 | $374.00 | $252.45K | 13,404 |
| Darren Zeidel General Counsel | Jul 17, 2026 | Sale(10b5-1 plan) | −625 | $370.00 | $231.25K | 14,729 |
| Darren Zeidel General Counsel | Jul 7, 2026 | Sale(10b5-1 plan) | −600 | $360.00 | $216.00K | 15,354 |
| Edmund Reese Chief Financial Officer | Jul 1, 2026 | Tax withholding | −2,198.11 | $343.56 | $755.18K | 3,901 |
| Edmund Reese Chief Financial Officer | Jul 1, 2026 | Option exercise | +3,975 | – | – | 6,099 |
| Jose Antonio Alvarez Director | Jun 25, 2026 | Tax withholding | −372.47 | $315.95 | $117.68K | 1,270 |
| Jose Antonio Alvarez Director | Jun 25, 2026 | Award | +776 | – | – | 1,643 |
| Jeffrey C. Campbell Director | Jun 25, 2026 | Tax withholding | −186.24 | $315.95 | $58.84K | 12,621 |
| Jeffrey C. Campbell Director | Jun 25, 2026 | Award | +776 | – | – | 12,807 |
| Jo Ann Jenkins Director | Jun 25, 2026 | Award | +776 | – | – | 1,060 |
| Jo Ann Jenkins Director | Jun 25, 2026 | Tax withholding | −186.24 | $315.95 | $58.84K | 874 |
| Jin-Yong Cai Director | Jun 25, 2026 | Award | +776 | – | – | 8,241 |
| Jin-Yong Cai Director | Jun 25, 2026 | Tax withholding | −396.52 | $315.95 | $125.28K | 7,845 |
| Richard C. Notebaert Director | Jun 25, 2026 | Tax withholding | −186.24 | $315.95 | $58.84K | 28,328 |
| Richard C. Notebaert Director | Jun 25, 2026 | Award | +776 | – | – | 28,514 |
| Gloria Santona Director | Jun 25, 2026 | Award | +776 | – | – | 22,648 |
| Gloria Santona Director | Jun 25, 2026 | Tax withholding | −186.24 | $315.95 | $58.84K | 22,462 |
| Sarah G. Smith Director | Jun 25, 2026 | Tax withholding | −186.24 | $315.95 | $58.84K | 2,114 |
| Sarah G. Smith Director | Jun 25, 2026 | Award | +776 | – | – | 2,300 |
| Lester B. Knight Director | Jun 25, 2026 | Award | +1,488 | – | – | 5,227 |
| Adriana Karaboutis Director | Jun 25, 2026 | Award | +776 | – | – | 2,792 |
| Adriana Karaboutis Director | Jun 25, 2026 | Tax withholding | −186.24 | $315.95 | $58.84K | 2,606 |
| James G. Stavridis Director | Jun 25, 2026 | Award | +776 | – | – | 1,564 |
| James G. Stavridis Director | Jun 25, 2026 | Tax withholding | −186.24 | $315.95 | $58.84K | 1,377 |
| Cheryl A. Francis Director | Jun 25, 2026 | Award | +776 | – | – | 29,480 |
| Cheryl A. Francis Director | Jun 25, 2026 | Tax withholding | −186.24 | $315.95 | $58.84K | 29,294 |
| Byron Spruell Director | Jun 25, 2026 | Award | +776 | – | – | 6,563 |
| Byron Spruell Director | Jun 25, 2026 | Tax withholding | −186.24 | $315.95 | $58.84K | 6,377 |
| Richard C. Notebaert Director | May 12, 2026 | Gift | −1,438 | – | – | 27,738 |
| Anne Corona Chief Commercial Officer | Mar 13, 2026 | Tax withholding | −77.08 | $321.41 | $24.77K | 4,195 |
| Anne Corona Chief Commercial Officer | Mar 13, 2026 | Option exercise | +174 | – | – | 4,272 |
| Anne Corona Chief Commercial Officer | Mar 13, 2026 | Tax withholding | −85.5 | $321.41 | $27.48K | 4,098 |
| Anne Corona Chief Commercial Officer | Mar 13, 2026 | Option exercise | +193 | – | – | 4,183 |
| Lori Goltermann CEO, Regions & North America | Mar 13, 2026 | Option exercise | +228 | – | – | 6,731 |
| Lori Goltermann CEO, Regions & North America | Mar 13, 2026 | Tax withholding | −99.18 | $321.41 | $31.88K | 6,632 |
| Lori Goltermann CEO, Regions & North America | Mar 13, 2026 | Option exercise | +290 | – | – | 6,922 |
| Lori Goltermann CEO, Regions & North America | Mar 13, 2026 | Tax withholding | −126.15 | $321.41 | $40.55K | 6,795 |
| Andy Marcell Global CEO, Solution Lines | Mar 13, 2026 | Option exercise | +464 | – | – | 9,046 |
| Andy Marcell Global CEO, Solution Lines | Mar 13, 2026 | Tax withholding | −567.83 | $321.41 | $182.51K | 8,582 |
| Andy Marcell Global CEO, Solution Lines | Mar 13, 2026 | Option exercise | +1,166 | – | – | 9,149 |
| Andy Marcell Global CEO, Solution Lines | Mar 13, 2026 | Tax withholding | −225.96 | $321.41 | $72.63K | 8,820 |
| Darren Zeidel General Counsel | Feb 26, 2026 | Sale | −4,300 | $329.72 | $1.42M | 15,954 |
| Gregory C. Case President & CEO, Director | Feb 19, 2026 | Gift | +11,206 | – | – | 175,170 |
| Gregory C. Case President & CEO, Director | Feb 19, 2026 | Gift | +11,206 | – | – | 175,169 |
| Gregory C. Case President & CEO, Director | Feb 19, 2026 | Gift | −7,500 | – | – | 29,912 |
| Gregory C. Case President & CEO, Director | Feb 19, 2026 | Gift | −7,500 | – | – | 22,412 |
| Gregory C. Case President & CEO, Director | Feb 19, 2026 | Gift | −11,206 | – | – | 11,206 |
| Gregory C. Case President & CEO, Director | Feb 19, 2026 | Gift | −11,206 | – | – | 0 |
| Lisa Stevens Chief Administrative Officer | Feb 18, 2026 | Gift | −32 | – | – | 26,321 |
| Gregory C. Case President & CEO, Director | Feb 17, 2026 | Tax withholding | −1,001.7 | $325.96 | $326.51K | 940,137 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Darren Zeidel Officer | Jul 28, 2026 | 1,900 | $717.75K | Jul 28, 2026 | Restricted Stock Vesting |
| Darren Zeidel Officer | Jul 17, 2026 | 1,950 | $725.50K | Jul 17, 2026 | Restricted Stock Vesting |
| Darren Zeidel Officer | Jul 7, 2026 | 600 | $216.00K | Jul 7, 2026 | Restricted Stock Vesting |
| Lori Goltermann Officer | Jun 4, 2026 | 5,766 | $1.87M | Jun 4, 2026 | Open Market Purchase |
| Darren Zeidel Officer | Feb 26, 2026 | 4,300 | $1.42M | Feb 26, 2026 | Restricted Stock Vesting |
| Darren Zeidel Officer | Feb 17, 2026 | 5,040 | $1.64M | Feb 17, 2026 | Restricted Stock Vesting |
| Michael Neller Former Officer | Nov 25, 2025 | 700 | $245.24K | Nov 25, 2025 | Restricted Stock Vesting |
| Darren Zeidel Officer | Nov 5, 2025 | 8,800 | $3.03M | Nov 5, 2025 | Restricted Stock Vesting |
| Jillian Slyfield Officer | Feb 10, 2025 | 260 | $100.06K | Feb 10, 2025 | Restricted Stock Vesting |
| Mindy F. Simon Officer | Nov 27, 2024 | 650 | $256.32K | Nov 27, 2024 | Restricted Stock Vesting |
| Lisa Stevens Officer | Nov 26, 2024 | 1,275 | $494.29K | Nov 26, 2024 | Restricted Stock Vesting |
| Darren Zeidel Officer | Aug 12, 2024 | 950 | $312.69K | Aug 12, 2024 | Restricted Stock Vesting |
| Lisa Stevens Officer | Aug 12, 2024 | 400 | $131.58K | Aug 12, 2024 | Restricted Stock Vesting |
| Andy Weitz Officer | Jul 30, 2024 | 8,454 | $2.75M | Jul 30, 2024 | Restricted Stock Vesting |
| Darren Zeidel Officer | Jul 26, 2024 | 6,597 | $2.05M | Jul 26, 2024 | Restricted Stock Vesting |