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 |
|---|---|---|---|---|---|
| Allworth Financial LP | 50 | $17 | 0.00% | +50 | New |
| Raymond James Financial Inc | 850 | $288 | 0.00% | +850 | New |
| JPMorgan Chase & Co | 882 | $298 | 0.00% | −62−6.6% | Reduced |
| BNP Paribas Arbitrage, SA | 983 | $332 | 0.00% | 00.0% | Unchanged |
| Federated Hermes, Inc. | 2,209 | $747 | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 4,448 | $1.50K | 0.00% | −40−0.9% | Reduced |
| Hartford Financial Management Inc. | 6,500 | $2.20K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 7,341 | $2.48K | 0.00% | +2,150+41.4% | Added |
| Bank of America Corp | 8,773 | $2.96K | 0.00% | +26+0.3% | Added |
| 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 |
| HSBC Holdings PLC | 10,520 | $3.50K | 0.00% | −1,534−12.7% | Reduced |
| Jane Street Group, LLC | 11,742 | $3.97K | 0.00% | +1,118+10.5% | Added |
| Utah Retirement Systems | 13,240 | $4.47K | 0.00% | 00.0% | Unchanged |
| Great Valley Advisor Group, Inc. | 15,000 | $5.07K | 0.00% | 00.0% | Unchanged |
| Two Sigma Securities, LLC | 15,153 | $5.12K | 0.00% | +15,153 | New |
| Barclays PLC | 15,390 | $5.20K | 0.00% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 23,263 | $7.86K | 0.00% | +23,263 | New |
| HRT Financial LP | 29,607 | $10.0K | 0.00% | +29,607 | New |
| Morgan Stanley | 36,484 | $12.3K | 0.00% | 00.0% | Unchanged |
| Northern Trust Corp | 38,124 | $12.9K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 40,032 | $13.5K | 0.00% | −2,168−5.1% | Reduced |
| XTX Topco Ltd | 55,479 | $18.8K | 0.00% | +55,479 | New |
| Virtu Financial LLC | 56,762 | $19.0K | 0.00% | +56,762 | New |
| State Street Corp | 62,072 | $21.0K | 0.00% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 63,786 | $21.6K | 0.00% | −2,925−4.4% | Reduced |
| Citadel Advisors LLC | 64,884 | $21.9K | 0.00% | +12,073+22.9% | Added |
| Acadian Asset Management LLC | 90,247 | $29.0K | 0.00% | 00.0% | Unchanged |
| Two Sigma Advisers, LP | 88,900 | $30.0K | 0.00% | −2,120−2.3% | Reduced |
| UBS Group AG | 120,242 | $40.6K | 0.00% | +104,844+680.9% | Added |
| BlackRock, Inc. | 154,648 | $52.3K | 0.00% | −54,771−26.2% | Reduced |
| Millennium Management LLC | 179,839 | $60.8K | 0.00% | −47,391−20.9% | Reduced |
| Geode Capital Management, LLC | 245,009 | $82.8K | 0.00% | −2,543−1.0% | Reduced |
| Mariner, LLC | 404,546 | $136.7K | 0.00% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 485,032 | $163.9K | 0.00% | +88,532+22.3% | Added |
| Laurion Capital Management LP | 735,543 | $248.6K | 0.03% | 00.0% | Unchanged |
| AJU IB Investment Co., Ltd. | 754,678 | $255.1K | 0.28% | 00.0% | Unchanged |
| Vanguard Group Inc | 909,941 | $307.6K | 0.00% | −61,986−6.4% | Reduced |
| Canaan Partners XI LLC | 940,984 | $318.1K | 0.19% | −591,568−38.6% | Reduced |
| Standard Life Aberdeen plc | 1,595,262 | $539.2K | 0.00% | −131,805−7.6% | Reduced |
| Almitas Capital LLC | 1,817,492 | $614.3K | 0.15% | +516,911+39.7% | Added |
| FMR LLC | 1,870,276 | $632.2K | 0.00% | +85,058+4.8% | Added |
| Pivotal bioVenture Partners Investment Advisor LLC | 2,404,644 | $812.8K | 0.50% | 00.0% | Unchanged |
| TPG GP A, LLC | 3,028,414 | $1.02M | 0.05% | 00.0% | Unchanged |
| New Leaf Venture Partners, L.L.C. | 3,301,603 | $1.12M | 3.39% | 00.0% | Unchanged |
| Johnson & Johnson | 3,636,363 | $1.21M | 0.36% | 00.0% | Unchanged |
| 5AM Venture Management, LLC | 3,630,724 | $1.23M | 0.47% | 00.0% | Unchanged |
| Viking Global Investors LPSuperinvestorViking Global Investors | 4,194,777 | $1.42M | 0.00% | 00.0% | Unchanged |
| 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 |