Who owns Aon plc?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of AON from SEC Form 13F filings across 1,259 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 1,259 institutions disclosed 192.7M shares of Aon plc worth $65.70B — about 90.4% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
1,259
13F holders
$65.70B
value, 2026 filers
90.4%
of shares outstanding (192.7M sh)
162
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of AON's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 15.7M | $5.21B | 0.1% | 7.4% | -2.7% |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | 13.6M | $4.51B | 0.1% | 6.4% | +0.2% |
| 3 | JPMORGAN CHASE & CO | 12.2M | $3.99B | 0.2% | 5.7% | +115.8% |
| 4 | Capital World Investors | 11.7M | $3.88B | 0.5% | 5.5% | +2.0% |
| 5 | STATE STREET CORP | 9.4M | $3.12B | 0.1% | 4.4% | +2.1% |
| 6 | Dodge & Cox | 8.6M | $2.85B | 1.5% | 4% | +5.9% |
| 7 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 7.6M | $2.58B | 0.8% | 3.6% | -8.9% |
| 8 | VANGUARD PORTFOLIO MANAGEMENT LLC | 7.2M | $2.39B | 0.1% | 3.4% | +58.0% |
| 9 | MORGAN STANLEY | 6.2M | $2.06B | 0.1% | 2.9% | -2.5% |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | 5.2M | $1.71B | 0.1% | 2.4% | -1.2% |
| 11 | Bank of New York Mellon Corp | 3.2M | $1.06B | 0.2% | 1.5% | -3.9% |
| 12 | PRICE T ROWE ASSOCIATES INC /MD/ | 3.1M | $1.04B | 0.1% | 1.5% | +144.9% |
| 13 | NORGES BANKNEW | 2.8M | $927.7M | 0.1% | 1.3% | new |
| 14 | Mitsubishi UFJ Asset Management Co., Ltd. | 2.8M | $913.4M | 0.5% | 1.3% | +9.4% |
| 15 | Independent Franchise Partners LLP | 2.6M | $878.0M | 5.8% | 1.2% | +2.3% |
| 16 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 2.6M | $867.3M | 0.4% | 1.2% | +227.9% |
| 17 | DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 2.3M | $748.2M | 0.6% | 1.1% | -23.5% |
| 18 | Boston Partners | 2.1M | $695.8M | 0.6% | 1% | +6.9% |
| 19 | NORTHERN TRUST CORP | 2.0M | $676.8M | 0.1% | 1% | -2.0% |
| 20 | AQR CAPITAL MANAGEMENT LLC | 1.9M | $623.0M | 0.2% | 0.9% | +94.5% |
| 21 | WCM INVESTMENT MANAGEMENT, LLC | 1.9M | $614.5M | 1.1% | 0.9% | -3.9% |
| 22 | Artisan Partners Limited Partnership | 1.9M | $613.8M | 1.0% | 0.9% | +12.6% |
| 23 | GOLDMAN SACHS GROUP INC | 1.7M | $580.1M | 0.1% | 0.8% | +10.4% |
| 24 | NEUBERGER BERMAN GROUP LLC | 1.7M | $561.1M | 0.4% | 0.8% | -8.9% |
| 25 | BANK OF AMERICA CORP /DE/ | 1.6M | $539.0M | 0.0% | 0.8% | +2.7% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.