PLYX: Polaryx Therapeutics, Inc. insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 0 sales totaling - in the last 180 days.
Institutional ownership (Q2 2026)
13 institutions reported holding $5.62M of Polaryx Therapeutics, Inc. on Form 13F (14 the quarter before). 4 opened a new position and 5 sold out. Shares held by institutions: -7%.
| Largest holders | Shares | Value |
|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC | 1,657,872 | $4.41M |
| GEODE CAPITAL MANAGEMENT, LLC | 170,998 | $455K |
| VANGUARD FIDUCIARY TRUST CO | 105,072 | $279K |
| STATE STREET CORP | 58,104 | $155K |
| BlackRock, Inc. | 41,012 | $109K |
| JANE STREET GROUP, LLC | 31,441 | $84K |
| NORTHERN TRUST CORP | 27,987 | $74K |
| Allworth Financial LP | 7,727 | $21K |
| Vanguard Global Advisers, LLC | 6,318 | $17K |
| Tower Research Capital LLC (TRC) | 3,002 | $8K |
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