9 institutions reported holding $968.1M of VANGUARD INDEX FDS (VFIN9) in SEC 13F filings for 2026-03-31. Largest institutional holders: IMC-Chicago, LLC ($579.3M), HRT FINANCIAL LP ($231.7M), SIMPLEX TRADING, LLC ($128.5M), GROUP ONE TRADING LLC ($17.6M), Perkins Coie Trust Co ($9.8M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | IMC-Chicago, LLC | $579.3M | 1.3M | Added |
| 2 | HRT FINANCIAL LP | $231.7M | 387,700 | Added |
| 3 | SIMPLEX TRADING, LLC | $128.5M | 358,200 | Trimmed |
| 4 | GROUP ONE TRADING LLC | $17.6M | 162,400 | Trimmed |
| 5 | Perkins Coie Trust Co | $9.8M | 33,994 | Added |
| 6 | Phillip James Consulting Co. | $821,000 | 1,462 | New |
| 7 | KERR FINANCIAL PLANNING Corp | $393,210 | 1,932 | Trimmed |
| 8 | Focus Partners Wealth | $0 | 0 | Exited |
| 9 | JPMORGAN CHASE & CO | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31