57 institutions reported holding $41.9M of RALLYBIO CORP COM (RLYB) in SEC 13F filings for 2026-03-31. Largest institutional holders: FMR LLC ($7.1M), VIKING GLOBAL INVESTORS LP ($4.7M), Cormorant Asset Management, LP ($3.6M), TPG GP A, LLC ($3.4M), Balyasny Asset Management L.P. ($3.4M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | FMR LLC | $7.1M | 793,451 | Trimmed |
| 2 | VIKING GLOBAL INVESTORS LP | $4.7M | 524,347 | Trimmed |
| 3 | Cormorant Asset Management, LP | $3.6M | 400,000 | New |
| 4 | TPG GP A, LLC | $3.4M | 378,551 | Trimmed |
| 5 | Balyasny Asset Management L.P. | $3.4M | 376,573 | New |
| 6 | Laurion Capital Management LP | $2.7M | 302,756 | New |
| 7 | Nantahala Capital Management, LLC | $2.7M | 300,635 | New |
| 8 | Pivotal bioVenture Partners Investment Advisor LLC | $2.7M | 300,579 | Trimmed |
| 9 | 5AM Venture Management, LLC | $2.6M | 291,788 | Trimmed |
| 10 | Almitas Capital LLC | $1.7M | 191,206 | Trimmed |
| 11 | RENAISSANCE TECHNOLOGIES LLC | $1.4M | 156,527 | Trimmed |
| 12 | JOHNSON & JOHNSON | $1.4M | 152,901 | Trimmed |
| 13 | VANGUARD CAPITAL MANAGEMENT LLC | $1.0M | 112,040 | New |
| 14 | AJU IB Investment Co., Ltd. | $846,176 | 94,334 | Trimmed |
| 15 | Mariner, LLC | $453,577 | 50,566 | Trimmed |
| 16 | GEODE CAPITAL MANAGEMENT, LLC | $317,821 | 35,425 | Trimmed |
| 17 | DELTEC ASSET MANAGEMENT LLC | $302,737 | 33,750 | New |
| 18 | Rangeley Capital, LLC | $270,266 | 30,130 | Trimmed |
| 19 | GTS SECURITIES LLC | $197,484 | 22,016 | New |
| 20 | ADAR1 Capital Management, LLC | $184,199 | 20,535 | New |
| 21 | CITADEL ADVISORS LLC | $178,377 | 19,886 | Trimmed |
| 22 | BlackRock, Inc. | $156,849 | 17,486 | Trimmed |
| 23 | VANGUARD FIDUCIARY TRUST CO | $121,517 | 13,547 | New |
| 24 | DIMENSIONAL FUND ADVISORS LP | $101,182 | 11,280 | New |
| 25 | XTX Topco Ltd | $100,697 | 11,226 | Trimmed |
Source: SEC Form 13F filings · as of 2026-03-31