16 institutions reported holding $5.8M of POLARYX THERAPEUTICS INC (PLYX) in SEC 13F filings for 2026-06-30. Largest institutional holders: VANGUARD GROUP INC ($4.7M), GEODE CAPITAL MANAGEMENT, LLC ($455,082), HRT FINANCIAL LP ($218,000), STATE STREET CORP ($154,557), BlackRock, Inc. ($109,092). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $4.7M | 1.8M | Hold |
| 2 | GEODE CAPITAL MANAGEMENT, LLC | $455,082 | 170,998 | Added |
| 3 | HRT FINANCIAL LP | $218,000 | 82,094 | New |
| 4 | STATE STREET CORP | $154,557 | 58,104 | Hold |
| 5 | BlackRock, Inc. | $109,092 | 41,012 | Hold |
| 6 | JANE STREET GROUP, LLC | $83,633 | 31,441 | New |
| 7 | NORTHERN TRUST CORP | $74,445 | 27,987 | Hold |
| 8 | Allworth Financial LP | $20,554 | 7,727 | New |
| 9 | Tower Research Capital LLC (TRC) | $7,985 | 3,002 | Added |
| 10 | UBS Group AG | $3,413 | 1,283 | Trimmed |
| 11 | Fortitude Family Office, LLC | $503 | 189 | New |
| 12 | MILLENNIUM MANAGEMENT LLC | $0 | 0 | Exited |
| 13 | Squarepoint Ops LLC | $0 | 0 | Exited |
| 14 | BANK OF AMERICA CORP /DE/ | $0 | 0 | Exited |
| 15 | GOLDMAN SACHS GROUP INC | $0 | 0 | Exited |
| 16 | MORGAN STANLEY | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30