AON supply chain intelligence for Aon plc: verified suppliers, customers, debt relationships, acquisitions, and ownership data.
Data compiled by Redley Lamar · ChainSifter Intelligence
Aon plc (AON) is shown with relationship data already present in ChainSifter's database. Counts below come from stored supply-chain records and filing/source URLs where available; missing source URLs are not filled in or estimated.
| Ticker | Name | Confidence | Evidence |
|---|---|---|---|
| AXS | AXIS Capital Holdings Limited | 92% | Reciprocal relationship from AXS graph: Reciprocal relationship from AON graph: Reciprocal relationship from AXS graph: Aon plc 664,704 9 % 633,297 10 % 677,930 11 % |
| EG | Everest Group, Ltd. | 92% | Reciprocal relationship from EG graph: Reciprocal relationship from AON graph: Reciprocal relationship from EG graph: Reciprocal relationship from AON graph: Reciprocal relationship from EG graph: Re… |
| RNR | RenaissanceRe Holdings Ltd. | 92% | Reciprocal relationship from RNR graph: In 2025, three brokerage firms accounted for 81.3% of our gross premiums written. The following table shows the percentage of our Property and Casualty and Spe… |
| FIHL | Pelagos Insurance Capital Limited | 90% | Reciprocal relationship from FIHL graph: Reciprocal relationship from AON graph: Reciprocal relationship from FIHL graph: Reciprocal relationship from AON graph: Reciprocal relationship from FIHL gra… |
| AXS-PE | AXIS Capital Holdings Limited | 72% | Reciprocal relationship from AXS-PE graph: Reciprocal relationship from AON graph: Reciprocal relationship from AXS-PE graph: Reciprocal relationship from AON graph: Reciprocal relationship from AXS-… |
| GSHD | Goosehead Insurance, Inc. | 72% | Reciprocal relationship from GSHD graph: Reciprocal relationship from AON graph: Reciprocal relationship from GSHD graph: Reciprocal relationship from AON graph: Reciprocal relationship from GSHD gra… |
| HCAT | Health Catalyst, Inc. | 72% | Reciprocal relationship from HCAT graph: that correlate with the growth of sustainable long-term value for our stockholders. For this purpose, we use a mix of compensation elements including base sal… |
| RNR-PF | RenaissanceRe Holdings Ltd. | 72% | Reciprocal relationship from RNR-PF graph: Reciprocal relationship from AON graph: Reciprocal relationship from RNR-PF graph: f weather-related natural disasters and catastrophes arises in part from … |
| RNR-PG | RNR-PG | 72% | Reciprocal relationship from RNR-PG graph: Reciprocal relationship from AON graph: Reciprocal relationship from RNR-PG graph: increased severity and frequency of weather-related natural disasters and… |
| WTM | White Mountains Insurance Group, Ltd. | 72% | Reciprocal relationship from WTM graph: Reciprocal relationship from AON graph: Reciprocal relationship from WTM graph: nal and excess of loss basis. Nuclear Nuclear insurance covers country specific… |
| Ticker | Name | Confidence | Evidence |
|---|---|---|---|
| KTN | Credit-Enhanced Corts Trust Aon | 80% | Reciprocal relationship from KTN graph: The issuer(s) of the underlying securities, or guarantor thereof, or successor thereto, as applicable, is subject to the information reporting requirements of … |
| AXS | AXIS Capital Holdings Limited | 72% | Reciprocal relationship from AXS graph: Reciprocal relationship from AON graph: Reciprocal relationship from AXS graph: Reciprocal relationship from AON graph: Reciprocal relationship from AXS graph:… |
| AXS-PE | AXIS Capital Holdings Limited | 72% | Reciprocal relationship from AXS-PE graph: Reciprocal relationship from AON graph: Reciprocal relationship from AXS-PE graph: Reciprocal relationship from AON graph: Reciprocal relationship from AXS-… |
| CO-ISSUED-NOTES-AON-CORPORATION-AON-NORTH-AMERIC | CO-ISSUED-NOTES-AON-CORPORATION-AON-NORTH-AMERIC | 62% | s of our debt at May 1, 2026 appear in the table below. Ratings Senior Long-term Debt Commercial Paper Outlook Standard & Poor’s A- A-2 Stable Moody’s Investor Services Baa2 P-2 Positive Fitch, Inc. … |
| SHOREONE-INSURANCE-MANAGERS-INC | SHOREONE-INSURANCE-MANAGERS-INC | 62% | deration 140 99 Compensation and benefits 53 60 Deferred revenue 28 30 Other 92 82 Total $ 1,359 $ 1,285 7. Acquisitions and Dispositions of Businesses Completed Acquisitions Total acquisitions compl… |
| Instrument | Description | Confidence | Evidence |
|---|---|---|---|
| AON-DEBT | Debt stack $15.0B | 90% | Market cache reports total debt of $15.0B. |
| AON-DEBT-7184 | Xbrl Convertible | 90% | xbrl convertible detail from xbrl 2007-12-31. |
| Holder | Name | Confidence | Evidence |
|---|---|---|---|
| AON-OWNER-BARCLAYS-PLC | BARCLAYS PLC | 95% | 13F/ownership overlay lists BARCLAYS PLC; shares held 9,568,857; value $3.20T; as of 2026-03-31. |
| AON-OWNER-MORGAN-STANLEY | MORGAN STANLEY | 95% | 13F/ownership overlay lists MORGAN STANLEY; shares held 18,081,837; value $6.21T; as of 2026-03-31. |
| AON-OWNER-BLACKROCK-INC | BlackRock, Inc. | 95% | 13F/ownership overlay lists BlackRock, Inc.; shares held 16,148,507; value $5.21T; as of 2026-03-31. |
| AON-OWNER-JPMORGAN-CHASE-CO | JPMORGAN CHASE & CO | 95% | 13F/ownership overlay lists JPMORGAN CHASE & CO; shares held 5,641,431; value $1.83T; as of 2026-03-31. |
| AON-OWNER-STATE-STREET-CORP | STATE STREET CORP | 95% | 13F/ownership overlay lists STATE STREET CORP; shares held 9,219,773; value $2.98T; as of 2026-03-31. |
| AON-OWNER-MASSACHUSETTS-FINANCIAL-SERVICES-CO-MA | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 95% | 13F/ownership overlay lists MASSACHUSETTS FINANCIAL SERVICES CO /MA/; shares held 8,358,097; value $2.75T; as of 2026-03-31. |
| AON-OWNER-VANGUARD-CAPITAL-MANAGEMENT-LLC | VANGUARD CAPITAL MANAGEMENT LLC | 95% | 13F/ownership overlay lists VANGUARD CAPITAL MANAGEMENT LLC; shares held 27,163,512; ownership 12.81%; value $8.77T; as of 2026-03-31. |
| AON-OWNER-DZ-BANK-AG-DEUTSCHE-ZENTRAL-GENOSSENSCHA | DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 95% | 13F/ownership overlay lists DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main; shares held 19,751,490; value $5.43T; as of 2026-03-31. |
| AON-OWNER-CAPITAL-WORLD-INVESTORS | Capital World Investors | 95% | 13F/ownership overlay lists Capital World Investors; shares held 11,477,788; value $3.70T; as of 2026-03-31. |
| AON-OWNER-DODGE-COX | Dodge & Cox | 95% | 13F/ownership overlay lists Dodge & Cox; shares held 8,116,095; value $2.62T; as of 2026-03-31. |
| AON | Aon plc | 82% | Stevens Lisa | Chief Administrative Officer | sell | 32 shares |
| AON | Aon plc | 82% | Anne Corona | Chief Commercial Officer | option_exercise | 3171 shares |
| AON | Aon plc | 82% | Case Gregory C | President & CEO | option_exercise | 71868 shares |
| AON | Aon plc | 82% | Zeidel Darren | General Counsel | option_exercise | 1113 shares |
| AON | Aon plc | 82% | Stevens Lisa | Chief Administrative Officer | sell | 7568 shares |
| AON | Aon plc | 82% | Mindy F. Simon | Chief Operating Officer | option_exercise | 1113 shares |
| AON | Aon plc | 82% | Reese Edmund | Chief Financial Officer | option_exercise | 2337 shares |
| AON | Aon plc | 82% | Marcell Andy | Global CEO, Solution Lines | option_exercise | 9539 shares |
| AON | Aon plc | 82% | Goltermann Lori | CEO, Regions & North America | option_exercise | 1113 shares |
| AON | Aon plc | 82% | Corona Anne | Chief Commercial Officer | option_exercise | 193 shares |
| AON | Aon plc | 82% | Anne Corona | Chief Commercial Officer | option_exercise | 3171 shares |
| AON | Aon plc | 82% | Goltermann Lori | CEO, Regions & North America | option_exercise | 1113 shares |
| AON | Aon plc | 82% | Marcell Andy | Global CEO, Solution Lines | option_exercise | 9539 shares |
| AON | Aon plc | 82% | Reese Edmund | Chief Financial Officer | option_exercise | 2337 shares |
| AON | Aon plc | 82% | Mindy F. Simon | Chief Operating Officer | option_exercise | 1113 shares |
| AON | Aon plc | 82% | Stevens Lisa | Chief Administrative Officer | sell | 7568 shares |
| AON | Aon plc | 82% | Zeidel Darren | General Counsel | option_exercise | 1113 shares |
| AON | Aon plc | 82% | KNIGHT LESTER B | 10% Owner | buy | 4000 shares |
| AON | Aon plc | 82% | KNIGHT LESTER B | 10% Owner | buy | 4000 shares |
| AON | Aon plc | 82% | Case Gregory C | President & CEO | option_exercise | 71868 shares |
| Ticker | Name | Chain Index | Hops | Relationship Types |
|---|---|---|---|---|
| WTM | White Mountains Insurance Group, Ltd. | 100.00 | 1 | ['supplier'] |
| FIHL | Pelagos Insurance Capital Limited | 100.00 | 1 | ['supplier'] |
| AXS | AXIS Capital Holdings Limited | 100.00 | 1 | ['customer', 'supplier'] |
| RNR-PG | RENAISSANCERE HOLDINGS LTD | 100.00 | 1 | ['supplier'] |
| AJG | Arthur J. Gallagher & Co. | 100.00 | 2 | |
| AXS-PE | AXIS Capital Holdings Limited | 100.00 | 1 | ['customer', 'supplier'] |
| MRSH | Marsh & McLennan Companies, Inc. | 100.00 | 2 | |
| GSHD | Goosehead Insurance, Inc. | 100.00 | 1 | ['supplier'] |
| HCAT | Health Catalyst, Inc. | 100.00 | 1 | ['supplier'] |
| KTN | Credit-Enhanced Corts Trust Aon | 100.00 | 1 | ['customer'] |
| RNR | RenaissanceRe Holdings Ltd. | 100.00 | 1 | ['supplier'] |
| EG | Everest Group, Ltd. | 100.00 | 1 | ['supplier'] |
| BMO | Bank of Montreal | 100.00 | 2 | |
| FNMAS | Federal National Mortgage Association | 100.00 | 2 | |
| FMCKI | Federal Home Loan Mortgage Corporation | 100.00 | 2 | |
| SPOK | Spok Holdings, Inc. | 50.00 | 2 | |
| AIG | American International Group, Inc. | 50.00 | 2 | |
| BX | Blackstone Inc. | 50.00 | 2 | |
| CRS | Carpenter Technology Corporation | 50.00 | 2 | |
| SBS | Companhia de Saneamento Básico do Estado de São Paulo - SABESP | 50.00 | 2 |