AON Institutional Ownership
Who owns Aon plc and what the big funds did with it last quarter, from every SEC 13F filing. 1,266 funds reported holding AON at Jun 30, 2026, together owning 90.9% of the company.
- ●586 buying vs 566 selling
- ▲Held by funds +2.5 pts
- ●Funds holding -2
- ▼Superinvestors: 3 added, 4 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 1,266 | 1,268 | −0.2% |
| In funds' top 10 | 31 | 29 | +6.9% |
| 13F shares | 193M | 188M | +2.8% |
| Held by funds | 90.9% | 88.5% | +2.5 pts |
| New positions | 122 | 119 | +2.5% |
| Increased | 464 | 473 | −1.9% |
| Reduced | 450 | 415 | +8.4% |
| Sold out | 116 | 148 | −21.6% |
| Calls (shares) | 62K | 43K | +44.2% |
| Puts (shares) | 55K | 80K | −31.1% |
| Put/call ratio | 0.89 | 1.51 | −41.1% |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in AON
All superinvestors →
Who owns AON
share of fund held shares- Index and passive funds31.4%
- Active managers and hedge funds45.3%
- Banks and brokers19.9%
- Pensions, insurers and other3.4%
The top 10 holders own 50.5% of all AON shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
409 funds changed their position- Assenagon Asset Management S.A.Trimmed−271K sh
- Vontobel Holding Ltd.Trimmed−258K sh
- Nippon Life Global Investors Americas, Inc.Sold out−130K sh
- DekaBank Deutsche GirozentraleTrimmed−148K sh
- Obermeyer Wealth PartnersTrimmed−93K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 7.41% | 15.7M | $5.2B | −432K |
| 2 | Vanguard Capital Management LLC | 6.41% | 13.6M | $4.5B | +22K |
| 3 | Jpmorgan Chase & Co | 5.74% | 12.2M | $4B | +6.5M |
| 4 | Capital World Investors | 5.52% | 11.7M | $3.9B | +234K |
| 5 | State Street Corp | 4.44% | 9.4M | $3.1B | +196K |
| 6 | Dodge & Cox | 4.05% | 8.6M | $2.9B | +477K |
| 7 | Massachusetts Financial Services Co /ma/ | 3.59% | 7.6M | $2.6B | −743K |
| 8 | Vanguard Portfolio Management LLC | 3.40% | 7.2M | $2.4B | +2.6M |
| 9 | Morgan Stanley | 2.93% | 6.2M | $2.1B | −160K |
| 10 | Geode Capital Management, LLC | 2.44% | 5.2M | $1.7B | −64K |
- Jpmorgan Chase & Co+6.5M sh+$2.1B
- Norges Bank+2.8M sh+$928M
- Vanguard Portfolio Management LLC+2.6M sh+$877M
- Price T Rowe Associates Inc /md/+1.9M sh+$616M
- Arrowstreet Capital, Limited Partnership+1.8M sh+$603M
- AQR Capital Management LLC+926K sh+$303M
- PineStone Asset Management Inc.+799K sh+$265M
- Dodge & Cox+477K sh+$158M
- UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME−1.2M sh−$410M
- Polen Capital Management LLC−1.2M sh−$395M
- Farallon Capital Management, L.l.c.−1.1M sh−$375M
- Cantillon Capital Management LLC−1.1M sh−$354M
- Sustainable Growth Advisers, LP−810K sh−$269M
- Massachusetts Financial Services Co /ma/−743K sh−$251M
- DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt−693K sh−$230M
- Amundi−509K sh−$169M
AON institutional ownership FAQ
Who owns the most AON stock?
In Q2 2026 13F filings the largest holder of AON was BlackRock, Inc., followed by Vanguard Capital Management LLC and Jpmorgan Chase & Co. Index fund managers are usually the biggest holders of large companies.
What percentage of AON is owned by institutions?
Funds that file 13F reports held 90.9% of AON's shares at Jun 30, 2026, compared with 88.5% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying AON?
In Q2 2026, 586 funds bought AON (122 of them new positions) and 566 sold (116 sold out completely). Among well known investors, 3 added and 4 cut. Our fund sentiment for AON is neutral.
What is AON's institutional put/call ratio?
Funds reported $18.4M of AON puts against $20.6M of calls, a put/call ratio of 0.89 (1.51 the quarter before). Market makers and bank trading desks are left out, since their options are mostly hedges.
How current is this AON ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.