Rallybio Corp
RLYB- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001739410
No open-market purchases or sales by Rallybio Corp insiders were filed in the last 90 days; 37 institutions reported holding it in 13F filings for Q2 2026, worth $65.0M in total; Viking Global Investors is the only superinvestor holding it.
13F holders, Q2 2025
Institutional positions in Rallybio Corp as of Jun 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 48
- +1 vs. Q1 2025
- Shares held
- 31.2M
- −808.5K (−2.5%) vs. Q1 2025
- Total value
- $10.5M
- −$10.4M (−49.7%) vs. Q1 2025
- New holders
- 7
- 8 more added
- Sold out
- 6
- 12 more reduced
Compare with Q1 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting RLYB on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 37 | $65.0M |
| Q1 2026 | 38 | $41.9M |
| Q4 2025 | 46 | $16.6M |
| Q3 2025 | 45 | $14.1M |
| Q2 2025 | 48 | $10.5M |
| Q1 2025 | 47 | $20.9M |
| Q4 2024 | 49 | $31.1M |
| Q3 2024 | 49 | $36.5M |
| Q2 2024 | 66 | $42.4M |
| Q1 2024 | 62 | $55.9M |
| Q4 2023 | 54 | $75.9M |
| Q3 2023 | 58 | $105.2M |
| Q2 2023 | 59 | $188.3M |
| Q1 2023 | 53 | $183.3M |
| Q4 2022 | 58 | $212.3M |
| Q3 2022 | 53 | $402.1M |
| Q2 2022 | 47 | $208.8M |
| Q1 2022 | 47 | $193.9M |
| Q4 2021 | 38 | $260.1M |
| Q3 2021 | 34 | $419.9M |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q2 2025
Shares, value and share of portfolio for each institution holding Rallybio Corp; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Viking Global Investors LPSuperinvestorViking Global Investors | 4,194,777 | $1.42M | 0.00% | 00.0% | Unchanged |
| 5AM Venture Management, LLC | 3,630,724 | $1.23M | 0.47% | 00.0% | Unchanged |
| Johnson & Johnson | 3,636,363 | $1.21M | 0.36% | 00.0% | Unchanged |
| New Leaf Venture Partners, L.L.C. | 3,301,603 | $1.12M | 3.39% | 00.0% | Unchanged |
| TPG GP A, LLC | 3,028,414 | $1.02M | 0.05% | 00.0% | Unchanged |
| Pivotal bioVenture Partners Investment Advisor LLC | 2,404,644 | $812.8K | 0.50% | 00.0% | Unchanged |
| FMR LLC | 1,870,276 | $632.2K | 0.00% | +85,058+4.8% | Added |
| Almitas Capital LLC | 1,817,492 | $614.3K | 0.15% | +516,911+39.7% | Added |
| Standard Life Aberdeen plc | 1,595,262 | $539.2K | 0.00% | −131,805−7.6% | Reduced |
| Canaan Partners XI LLC | 940,984 | $318.1K | 0.19% | −591,568−38.6% | Reduced |
| Vanguard Group Inc | 909,941 | $307.6K | 0.00% | −61,986−6.4% | Reduced |
| AJU IB Investment Co., Ltd. | 754,678 | $255.1K | 0.28% | 00.0% | Unchanged |
| Laurion Capital Management LP | 735,543 | $248.6K | 0.03% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 485,032 | $163.9K | 0.00% | +88,532+22.3% | Added |
| Mariner, LLC | 404,546 | $136.7K | 0.00% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 245,009 | $82.8K | 0.00% | −2,543−1.0% | Reduced |
| Millennium Management LLC | 179,839 | $60.8K | 0.00% | −47,391−20.9% | Reduced |
| BlackRock, Inc. | 154,648 | $52.3K | 0.00% | −54,771−26.2% | Reduced |
| UBS Group AG | 120,242 | $40.6K | 0.00% | +104,844+680.9% | Added |
| Two Sigma Advisers, LP | 88,900 | $30.0K | 0.00% | −2,120−2.3% | Reduced |
| Acadian Asset Management LLC | 90,247 | $29.0K | 0.00% | 00.0% | Unchanged |
| Citadel Advisors LLC | 64,884 | $21.9K | 0.00% | +12,073+22.9% | Added |
| Two Sigma Investments, LP | 63,786 | $21.6K | 0.00% | −2,925−4.4% | Reduced |
| State Street Corp | 62,072 | $21.0K | 0.00% | 00.0% | Unchanged |
| Virtu Financial LLC | 56,762 | $19.0K | 0.00% | +56,762 | New |
| XTX Topco Ltd | 55,479 | $18.8K | 0.00% | +55,479 | New |
| Wells Fargo & Company | 40,032 | $13.5K | 0.00% | −2,168−5.1% | Reduced |
| Northern Trust Corp | 38,124 | $12.9K | 0.00% | 00.0% | Unchanged |
| Morgan Stanley | 36,484 | $12.3K | 0.00% | 00.0% | Unchanged |
| HRT Financial LP | 29,607 | $10.0K | 0.00% | +29,607 | New |
| Susquehanna International Group, LLP | 23,263 | $7.86K | 0.00% | +23,263 | New |
| Barclays PLC | 15,390 | $5.20K | 0.00% | 00.0% | Unchanged |
| Two Sigma Securities, LLC | 15,153 | $5.12K | 0.00% | +15,153 | New |
| Great Valley Advisor Group, Inc. | 15,000 | $5.07K | 0.00% | 00.0% | Unchanged |
| Utah Retirement Systems | 13,240 | $4.47K | 0.00% | 00.0% | Unchanged |
| Jane Street Group, LLC | 11,742 | $3.97K | 0.00% | +1,118+10.5% | Added |
| HSBC Holdings PLC | 10,520 | $3.50K | 0.00% | −1,534−12.7% | Reduced |
| Mercer Global Advisors Inc | 10,000 | $3.38K | 0.00% | 00.0% | Unchanged |
| Captrust Financial Advisors | 10,000 | $3.38K | 0.00% | 00.0% | Unchanged |
| Bank of America Corp | 8,773 | $2.96K | 0.00% | +26+0.3% | Added |
| Tower Research Capital LLC (TRC) | 7,341 | $2.48K | 0.00% | +2,150+41.4% | Added |
| Hartford Financial Management Inc. | 6,500 | $2.20K | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 4,448 | $1.50K | 0.00% | −40−0.9% | Reduced |
| Federated Hermes, Inc. | 2,209 | $747 | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 983 | $332 | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 882 | $298 | 0.00% | −62−6.6% | Reduced |
| Raymond James Financial Inc | 850 | $288 | 0.00% | +850 | New |
| Allworth Financial LP | 50 | $17 | 0.00% | +50 | New |
| Allostery Investments LP | 0 | $0 | 0.00% | −752,235−100.0% | Sold out |
| Bridgeway Capital Management, LLC | 0 | $0 | 0.00% | −91,600−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −33,270−100.0% | Sold out |
| ADAR1 Capital Management, LLC | 0 | $0 | 0.00% | −13,400−100.0% | Sold out |
| Point72 Asia (Singapore) Pte. Ltd. | 0 | $0 | 0.00% | −10,007−100.0% | Sold out |
| Point72 (DIFC) Ltd | 0 | $0 | 0.00% | −975−100.0% | Sold out |