1 institutions reported holding $265,615 of VANGUARD MORTGAGE-BACKED SECUR (VMBSX) in SEC 13F filings for 2026-03-31. Largest institutional holders: Ancora Advisors LLC ($265,615). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Ancora Advisors LLC | $265,615 | 5,657 | Added |
Source: SEC Form 13F filings · as of 2026-03-31