Who Owns ATRIUM THERAPEUTICS INC (RNA)? -- Institutional Holders (2026-06-30)
198 institutions reported holding $206.3M of ATRIUM THERAPEUTICS INC (RNA) in SEC 13F filings for 2026-06-30. Largest institutional holders: Sessa Capital IM, L.P. ($20.2M), PRICE T ROWE ASSOCIATES INC /MD/ ($19.8M), BlackRock, Inc. ($19.5M), VANGUARD GROUP INC ($12.7M), SUSQUEHANNA INTERNATIONAL GROUP, LLP ($11.3M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|
| 1 | Sessa Capital IM, L.P. | $20.2M | 1.5M | Added |
| 2 | PRICE T ROWE ASSOCIATES INC /MD/ | $19.8M | 1.5M | Trimmed |
| 3 | BlackRock, Inc. | $19.5M | 1.4M | Added |
| 4 | VANGUARD GROUP INC | $12.7M | 947,572 | Trimmed |
| 5 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $11.3M | 840,600 | Trimmed |
| 6 | CRCM LP | $8.6M | 641,539 | New |
| 7 | TIG Advisors, LLC | $7.6M | 561,533 | Trimmed |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | $5.2M | 386,929 | Added |
| 9 | TWO SIGMA INVESTMENTS, LP | $4.6M | 345,481 | Added |
| 10 | GOLDMAN SACHS GROUP INC | $4.2M | 310,341 | Trimmed |
| 11 | 683 Capital Management, LLC | $4.0M | 300,000 | Hold |
| 12 | STATE STREET CORP | $3.7M | 271,762 | Added |
| 13 | Arbiter Partners Capital Management LLC | $3.5M | 261,288 | Added |
| 14 | CANTOR FITZGERALD, L. P. | $3.5M | 256,917 | Added |
| 15 | Slotnik Capital, LLC | $3.2M | 237,637 | Added |
| 16 | Weiss Asset Management LP | $3.0M | 219,730 | Trimmed |
| 17 | MILLENNIUM MANAGEMENT LLC | $2.7M | 200,559 | Added |
| 18 | Schonfeld Strategic Advisors LLC | $2.7M | 199,158 | Added |
| 19 | AQR CAPITAL MANAGEMENT LLC | $2.3M | 172,235 | New |
| 20 | NEXPOINT ASSET MANAGEMENT, L.P. | $2.0M | 150,025 | Hold |
| 21 | Polar Asset Management Partners Inc. | $2.0M | 150,000 | Added |
| 22 | Squarepoint Ops LLC | $2.0M | 146,743 | Trimmed |
| 23 | Bracebridge Capital, LLC | $1.9M | 139,239 | Hold |
| 24 | NOMURA HOLDINGS INC | $1.8M | 137,394 | Added |
| 25 | Caption Management, LLC | $1.8M | 136,077 | Trimmed |
Source: SEC Form 13F filings · as of 2026-06-30