The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This stock page is the Follow view. The Build view lets your agent query AON owners, fund changes, insider filings, and source links through REST or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/AON"
Use Arkolith to show who owns AON, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | STATE STREET CORP | $3.0B | 9.2M | ▲+0.2% Added · +16K sh | Q1 2026 | |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | $1.5B | 4.6M | ▲New +4.6M sh | Q1 2026 | |
| 3 | Independent Franchise Partners LLP | $835.4M | 2.6M | ▲+22% Added · +472K sh | Q1 2026 | |
| 4 | Veritas Asset Management LLP | $490.7M | 1.5M | ▼−24% Reduced · −472K sh | Q1 2026 | |
| 5 | DIAMOND HILL CAPITAL MANAGEMENT INC | $480.3M | 1.5M | ▼−6.8% Reduced · −108K sh | Q1 2026 | |
| 6 | POLEN CAPITAL MANAGEMENT LLC | $437.1M | 1.4M | ▼−27% Reduced · −492K sh | Q1 2026 | |
| 7 | VANGUARD FIDUCIARY TRUST CO | $395.6M | 1.2M | ▲New +1.2M sh | Q1 2026 | |
| 8 | CANTILLON CAPITAL MANAGEMENT LLC | $353.6M | 1.1M | ▼−12% Reduced · −147K sh | Q1 2026 | |
| 9 | VIKING GLOBAL INVESTORS LP | $350.9M | 1.1M | ▲+39% Added · +303K sh | Q1 2026 | |
| 10 | Sustainable Growth Advisers, LP | $339.5M | 1.1M | ▼−14% Reduced · −170K sh | Q1 2026 | |
| 11 | Vontobel Holding Ltd. | $322.5M | 999K | ▲+31% Added · +239K sh | Q1 2026 | |
| 12 | Longview Partners (Guernsey) LTD | $315.1M | 976K | ▼−12% Reduced · −130K sh | Q1 2026 | |
| 13 | First Pacific Advisors, LP | $227.0M | 703K | ▲+7.1% Added · +47K sh | Q1 2026 | |
| 14 | Meritage Group LP | $219.5M | 680K | ▲New +680K sh | Q1 2026 | |
| 15 | ALTRINSIC GLOBAL ADVISORS LLC | $213.3M | 661K | ▲+1.5% Added · +10K sh | Q1 2026 | |
| 16 | COMGEST GLOBAL INVESTORS S.A.S. | $202.9M | 629K | ▲+145% Added · +372K sh | Q1 2026 | |
| 17 | Fiera Capital Corp | $177.6M | 550K | ▲+3.1% Added · +17K sh | Q1 2026 | |
| 18 | USS Investment Management Ltd | $162.2M | 502K | ▼−26% Reduced · −179K sh | Q1 2026 | |
| 19 | EAGLE CAPITAL MANAGEMENT LLC | $149.6M | 463K | ▼−80% Reduced · −1.8M sh | Q1 2026 | |
| 20 | BLAIR WILLIAM & CO/IL | $136.1M | 422K | ▼−15% Reduced · −75K sh | Q1 2026 | |
| 21 | Haverford Trust Co | $111.7M | 346K | ▼−1.4% Reduced · −5K sh | Q1 2026 | |
| 22 | DAVENPORT & Co LLC | $108.9M | 337K | ▲+25% Added · +68K sh | Q1 2026 | |
| 23 | Prana Capital Management, LP | $104.4M | 323K | ▲+107% Added · +167K sh | Q1 2026 | |
| 24 | Bowie Capital Management, LLC | $104.0M | 322K | ▼−6.4% Reduced · −22K sh | Q1 2026 | |
| 25 | AVIVA PLC | $100.2M | 310K | ▼−6.9% Reduced · −23K sh | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Mar 13, 2026 | Marcell Andy | Global CEO, Solution Lines | Option exercise (M) | 464 | — |
| Mar 13, 2026 | Corona Anne | Chief Commercial Officer | Tax withholding (F) | 86 | $27K |
| Mar 13, 2026 | Marcell Andy | Global CEO, Solution Lines | Tax withholding (F) | 568 | $183K |
| Mar 13, 2026 | Marcell Andy | Global CEO, Solution Lines | Option exercise (M) | 1K | — |
| Mar 13, 2026 | Corona Anne | Chief Commercial Officer | Option exercise (M) | 174 | $0 |
| Mar 13, 2026 | Marcell Andy | Global CEO, Solution Lines | Option exercise (M) | 464 | $0 |
| Mar 13, 2026 | Marcell Andy | Global CEO, Solution Lines | Option exercise (M) | 1K | $0 |
| Mar 13, 2026 | Corona Anne | Chief Commercial Officer | Option exercise (M) | 193 | $0 |
| Mar 13, 2026 | Corona Anne | Chief Commercial Officer | Tax withholding (F) | 77 | $25K |
| Mar 13, 2026 | Goltermann Lori | CEO, Regions & North America | Tax withholding (F) | 126 | $41K |
| Mar 13, 2026 | Goltermann Lori | CEO, Regions & North America | Option exercise (M) | 290 | — |
| Mar 13, 2026 | Goltermann Lori | CEO, Regions & North America | Tax withholding (F) | 99 | $32K |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 385 funds | $115.2B |
| AMAZON.COM INCAMZN | 382 funds | $85.6B |
| ALPHABET INC-CL AGOOGL | 379 funds | $90.6B |
| META PLATFORMS INC-CLASS AMETA | 379 funds | $48.1B |
| MASTERCARD INC - AMA | 376 funds | $22.1B |
| VISA INC-CLASS A SHARESV | 375 funds | $28.3B |
| NVIDIA CORPNVDA | 373 funds | $145.3B |
| BROADCOM INCAVGO | 373 funds | $58.1B |
| APPLE INCAAPL | 371 funds | $191.4B |
| ELI LILLY & COLLY | 371 funds | $30.6B |
| UNITEDHEALTH GROUP INCUNH | 371 funds | $12.4B |
| ALPHABET INC-CL CGOOG | 370 funds | $54.8B |
Ranked by how many of AON's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for AON. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes. Every panel above is one call to the Arkolith API & MCP server.