Aon Corp AON CORP is a security (CUSIP 037389BB8) tracked across SEC portfolio filings. 3 registered fund positions totaling $685K via N-PORT as of 2026-05-31.
| Fund | Registrant | Value | % of fund |
|---|---|---|---|
| VANGUARD BALANCED INDEX FUND | VANGUARD VALLEY FORGE FUNDS | $602K | 0.10% |
| MFS Core Bond Fund | MFS SERIES TRUST XII | $61K | 18.11% |
| Core Fixed Income Fund | MORGAN STANLEY PATHWAY FUNDS | $22K | 0.12% |