Rallybio Corp - RLYB
Detailed investor-level table based on 13F positions.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ADAR1 Capital Management, LLC | History | Added to | 926,352 | 14,821 | 0.68% | 0.01% | 1 | +905,817 | 4411.09% | Q2 2026 | Aug 14, 2026 |
| FMR LLC | History | Added to | 794,720 | 12,715 | 0.0% | 0.0% | 2 | +1,269 | 0.16% | Q2 2026 | Aug 13, 2026 |
| VIKING GLOBAL INVESTORS LP | History | No change | 524,347 | 8,389 | 0.02% | 0.01% | 3 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| TPG GP A, LLC | History | No change | 378,551 | 6,056 | 0.12% | 0.09% | 4 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| Pivotal bioVenture Partners Investment Advisor LLC | History | No change | 300,579 | 4,809 | 1.56% | 0.96% | 5 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | History | Added to | 199,907 | 3,198 | 0.0% | 0.0% | 6 | +43,380 | 27.71% | Q2 2026 | Aug 13, 2026 |
| Nantahala Capital Management, LLC | History | Reduced | 188,422 | 3,014 | 0.1% | 0.1% | 7 | -112,213 | -37.33% | Q2 2026 | Aug 14, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | History | Added to | 172,497 | 2,759 | 0.0% | 0.0% | 8 | +60,457 | 53.96% | Q2 2026 | Aug 13, 2026 |
| Almitas Capital LLC | History | Reduced | 120,682 | 1,930 | 0.46% | 0.39% | 9 | -70,524 | -36.88% | Q2 2026 | Aug 14, 2026 |
| Rangeley Capital, LLC | History | Added to | 104,850 | 1,677 | 1.53% | 0.26% | 10 | +74,720 | 247.99% | Q2 2026 | Aug 14, 2026 |
| CITADEL ADVISORS LLC | History | Added to | 72,200 | 1,155 | 0.0% | 0.0% | 11 | +52,314 | 263.07% | Q2 2026 | Sep 02, 2026 |
| AJU IB Investment Co., Ltd. | History | No change | 94,334 | 846 | 2.77% | 2.77% | 12 | 0 | 0.0% | Q1 2026 | May 08, 2026 |
| Mariner, LLC | History | No change | 50,566 | 809 | 0.0% | 0.0% | 13 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| JANE STREET GROUP, LLC | History | New | 47,423 | 758 | 0.0% | — | 14 | +47,423 | New | Q2 2026 | Aug 14, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Reduced | 32,047 | 512 | 0.0% | 0.0% | 15 | -3,378 | -9.54% | Q2 2026 | Aug 12, 2026 |
| BlackRock, Inc. | History | Added to | 30,332 | 485 | 0.0% | 0.0% | 16 | +12,846 | 73.46% | Q2 2026 | Aug 07, 2026 |
| HRT FINANCIAL LP | History | New | 25,657 | 410 | 0.0% | — | 17 | +25,657 | New | Q2 2026 | Aug 14, 2026 |
| XTX Topco Ltd | History | Added to | 21,497 | 343 | 0.0% | 0.0% | 18 | +10,271 | 91.49% | Q2 2026 | Aug 14, 2026 |
| VANGUARD FIDUCIARY TRUST CO | History | Added to | 16,820 | 269 | 0.0% | 0.0% | 19 | +3,273 | 24.16% | Q2 2026 | Aug 13, 2026 |
| TWO SIGMA INVESTMENTS, LP | History | New | 16,619 | 265 | 0.0% | — | 20 | +16,619 | New | Q2 2026 | Aug 14, 2026 |
| STATE STREET CORP | History | New | 12,996 | 207 | 0.0% | — | 21 | +12,996 | New | Q2 2026 | Aug 07, 2026 |
| Quadrature Capital Ltd | History | New | 12,995 | 207 | 0.0% | — | 22 | +12,995 | New | Q2 2026 | Aug 06, 2026 |
| DIMENSIONAL FUND ADVISORS LP | History | No change | 11,280 | 180 | 0.0% | 0.0% | 23 | 0 | 0.0% | Q2 2026 | Aug 11, 2026 |
| Vanguard Global Advisers, LLC | History | No change | 1,442 | 23 | 0.0% | 0.0% | 24 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| Hartford Financial Management Inc. | History | No change | 812 | 12 | 0.0% | 0.0% | 25 | 0 | 0.0% | Q2 2026 | Jul 23, 2026 |
| SBI Securities Co., Ltd. | History | Reduced | 506 | 8 | 0.0% | 0.0% | 26 | -18 | -3.44% | Q2 2026 | Jul 22, 2026 |
| Caitong International Asset Management Co., Ltd | History | New | 434 | 6 | 0.0% | — | 27 | +434 | New | Q2 2026 | Aug 04, 2026 |
| UBS Group AG | History | Reduced | 146 | 2 | 0.0% | 0.0% | 29 | -7,768 | -98.16% | Q2 2026 | Aug 13, 2026 |
| Truvestments Capital LLC | History | New | 129 | 2 | 0.0% | — | 30 | +129 | New | Q2 2026 | Aug 12, 2026 |
| MORGAN STANLEY | History | Reduced | 125 | 2 | 0.0% | 0.0% | 28 | -1 | -0.79% | Q2 2026 | Aug 13, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | No change | 120 | 1 | 0.0% | 0.0% | 31 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| Cormorant Asset Management, LP | History | Closed out | 0 | 0 | — | 0.18% | — | -400,000 | -100.0% | Q2 2026 | Aug 14, 2026 |
| BALYASNY ASSET MANAGEMENT L.P. | History | Closed out | 0 | 0 | — | 0.0% | — | -376,573 | -100.0% | Q2 2026 | Aug 14, 2026 |
| Laurion Capital Management LP | History | Closed out | 0 | 0 | — | 0.12% | — | -302,756 | -100.0% | Q2 2026 | Aug 13, 2026 |
| 5AM Venture Management, LLC | History | Closed out | 0 | 0 | — | 0.73% | — | -291,788 | -100.0% | Q2 2026 | Aug 14, 2026 |
| JOHNSON & JOHNSON | History | Closed out | 0 | 0 | — | 0.21% | — | -152,901 | -100.0% | Q2 2026 | Aug 06, 2026 |
| DELTEC ASSET MANAGEMENT LLC | History | Closed out | 0 | 0 | — | 0.06% | — | -33,750 | -100.0% | Q2 2026 | Jul 21, 2026 |
| GTS SECURITIES LLC | History | Closed out | 0 | 0 | — | 0.01% | — | -22,016 | -100.0% | Q2 2026 | Aug 14, 2026 |
| ACADIAN ASSET MANAGEMENT LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -10,433 | -100.0% | Q2 2026 | Aug 13, 2026 |
| JPMORGAN CHASE & CO | History | Reduced | 9 | 0 | — | 0.0% | — | -2,488 | -99.64% | Q2 2026 | Aug 12, 2026 |
| Tower Research Capital LLC (TRC) | History | Closed out | 0 | 0 | — | 0.0% | — | -907 | -100.0% | Q2 2026 | Aug 11, 2026 |
| EverSource Wealth Advisors, LLC | History | New | 31 | 0 | — | — | — | +31 | New | Q2 2026 | Jul 24, 2026 |
| BARCLAYS PLC | History | New | 3 | 0 | — | — | — | +3 | New | Q2 2026 | Aug 14, 2026 |
| WELLS FARGO & COMPANY/MN | History | No change | 37 | 0 | — | — | — | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| DANSKE BANK A/S | History | No change | 1 | 0 | — | — | — | 0 | 0.0% | Q2 2026 | Aug 10, 2026 |
| Allworth Financial LP | History | No change | 6 | 0 | — | — | — | 0 | 0.0% | Q2 2026 | Aug 11, 2026 |
| Fortitude Family Office, LLC | History | No change | 53 | 0 | — | — | — | 0 | 0.0% | Q2 2026 | Jul 20, 2026 |