9 institutions reported holding $10.8M of VANGUARD STAR FUND STAR PORTFO (VGSTX) in SEC 13F filings for 2026-06-30. Largest institutional holders: GROUP ONE TRADING LLC ($3.7M), IMC-Chicago, LLC ($3.3M), SIMPLEX TRADING, LLC ($1.0M), Dempze Nancy E ($961,603), CARRET ASSET MANAGEMENT, LLC ($915,715). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GROUP ONE TRADING LLC | $3.7M | 42,800 | Added |
| 2 | IMC-Chicago, LLC | $3.3M | 38,500 | Trimmed |
| 3 | SIMPLEX TRADING, LLC | $1.0M | 12,100 | Trimmed |
| 4 | Dempze Nancy E | $961,603 | 31,272 | Hold |
| 5 | CARRET ASSET MANAGEMENT, LLC | $915,715 | 29,779 | Trimmed |
| 6 | NEVILLE RODIE & SHAW INC | $718,000 | 23,346 | Added |
| 7 | STALEY CAPITAL ADVISERS INC | $211,069 | 4,594 | New |
| 8 | NORTHSTAR ASSET MANAGEMENT Co | $0 | 0 | Exited |
| 9 | RHL GROUP, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30