AON Institutional Ownership
Top institutional (13F) holders of AON and 5%+ (13D/G) positions, sourced from SEC EDGAR.
Institutional owners
62
Institutional value
$44.74B
Top holder
BlackRock, Inc.
Top holders
| Holder | Stake | Filed | Value |
|---|---|---|---|
| BlackRock, Inc.holding company | 7.4% | Aug 7, 2026 | $5.21B |
| Vanguard Capital Managementinvestment advisor | 6.4% | Aug 13, 2026 | $4.51B |
| JPMORGAN CHASE & COholding company | 5.7% | Aug 12, 2026 | $3.99B |
| Capital World Investorsinvestment advisor | 5.5% | Aug 12, 2026 | $3.88B |
| STATE STREET CORPORATIONholding company | 4.4% | Sep 22, 2026 | $3.12B |
| Dodge & Coxinvestment advisor | 4.1% | Aug 13, 2026 | $2.85B |
| Massachusetts Financial Services Companyinvestment advisor | 3.6% | Aug 3, 2026 | $2.58B |
| Vanguard Portfolio Managementinvestment advisor | 3.4% | Aug 13, 2026 | $2.39B |
| MORGAN STANLEYholding company | 2.9% | Aug 13, 2026 | $2.06B |
| GEODE CAPITAL MANAGEMENT, LLCinvestment advisor | 2.5% | Nov 6, 2026 | $1.45B |
| T. Rowe Price Associates, Inc.investment advisor | 1.5% | Aug 14, 2026 | $1.04B |
| Norges Bankother | 1.3% | Aug 12, 2026 | $927.66M |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIPinvestment advisor | 1.2% | Aug 13, 2026 | $867.29M |
| Bank of New York Mellon Corpholding company | 1.4% | Nov 5, 2026 | $821.49M |
| Boston Partnersinvestment advisor | 1.0% | Aug 4, 2026 | $695.75M |
| NORTHERN TRUST CORPinvestment advisor | 1.0% | Aug 13, 2026 | $676.82M |
| AQR CAPITAL MANAGEMENT LLCinvestment advisor | 0.9% | Aug 14, 2026 | $623.01M |
| Artisan Partners Limited Partnershipinvestment advisor | 0.9% | Aug 13, 2026 | $613.83M |
| GOLDMAN SACHS GROUP INCinvestment advisor | 0.8% | Aug 14, 2026 | $580.06M |
| Neuberger Berman Group LLCinvestment advisor | 0.8% | Oct 27, 2026 | $561.08M |
| BANK OF AMERICA CORP /DE/holding company | 0.8% | Aug 14, 2026 | $538.99M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INCinvestment advisor | 0.6% | Aug 14, 2026 | $446.24M |
| VIKING GLOBAL INVESTORS LPother | 0.5% | Aug 14, 2026 | $381.86M |
| Invesco Ltd.holding company | 0.5% | Aug 14, 2026 | $354.69M |
| Dimensional Fund Advisors LPinvestment advisor | 0.6% | Nov 4, 2026 | $346.22M |
5%+ holders
Current stakes of 5% or more from Schedule 13D and 13G filings. A joint filing shows once, under its lead filer.
| Holder | Form | Stake | Filed |
|---|---|---|---|
| Vanguard Capital Managementinvestment advisor | SC 13G | 7.3% | Apr 29, 2026 |
| Massachusetts Financial Services Company ("MFS")other | SC 13G | 5.8% | Feb 7, 2017 |
| JPMORGAN CHASE & COholding company | SC 13G/A | 6.7% | Oct 16, 2026 |
| Massachusetts Financial Services Company ("MFS") 04-2747644investment advisor | SC 13G/A | 6.2% | Feb 9, 2024 |
| Capital World Investors 95-1411037investment advisor | SC 13G | 5.6% | Nov 13, 2024 |
Institutional ownership for companies related to AON
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Source: SEC EDGAR Schedule 13D / 13G and 13F filings.