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, Q1 2025
Institutional positions in Rallybio Corp as of Mar 31, 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
- 47
- −2 vs. Q4 2024
- Shares held
- 32.0M
- −427.1K (−1.3%) vs. Q4 2024
- Total value
- $20.9M
- −$10.2M (−32.8%) vs. Q4 2024
- New holders
- 2
- 9 more added
- Sold out
- 4
- 15 more reduced
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding Rallybio Corp; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Viking Global Investors LPSuperinvestorViking Global Investors | 4,194,777 | $2.75M | 0.01% | 00.0% | Unchanged |
| Johnson & Johnson | 3,636,363 | $2.38M | 0.70% | 00.0% | Unchanged |
| 5AM Venture Management, LLC | 3,630,724 | $2.38M | 0.90% | 00.0% | Unchanged |
| New Leaf Venture Partners, L.L.C. | 3,301,603 | $2.15M | 4.78% | 00.0% | Unchanged |
| TPG GP A, LLC | 3,028,414 | $1.98M | 0.04% | 00.0% | Unchanged |
| Pivotal bioVenture Partners Investment Advisor LLC | 2,404,644 | $1.56M | 1.26% | 00.0% | Unchanged |
| FMR LLC | 1,785,218 | $1.17M | 0.00% | +18,517+1.0% | Added |
| Standard Life Aberdeen plc | 1,727,067 | $1.13M | 0.00% | 00.0% | Unchanged |
| Canaan Partners XI LLC | 1,532,552 | $1.00M | 1.51% | −165,132−9.7% | Reduced |
| Almitas Capital LLC | 1,300,581 | $851.2K | 0.28% | +2,462+0.2% | Added |
| Vanguard Group Inc | 971,927 | $636.6K | 0.00% | +46,406+5.0% | Added |
| AJU IB Investment Co., Ltd. | 754,678 | $493.9K | 0.59% | 00.0% | Unchanged |
| Allostery Investments LP | 752,235 | $492.3K | 0.71% | −51,163−6.4% | Reduced |
| Laurion Capital Management LP | 735,543 | $481.4K | 0.04% | 00.0% | Unchanged |
| Mariner, LLC | 404,546 | $264.8K | 0.00% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 396,500 | $259.5K | 0.00% | −44,818−10.2% | Reduced |
| Geode Capital Management, LLC | 247,552 | $162.1K | 0.00% | −275−0.1% | Reduced |
| Millennium Management LLC | 227,230 | $148.7K | 0.00% | −111,679−33.0% | Reduced |
| BlackRock, Inc. | 209,419 | $137.1K | 0.00% | +8,200+4.1% | Added |
| Bridgeway Capital Management, LLC | 91,600 | $60.0K | 0.00% | 00.0% | Unchanged |
| Two Sigma Advisers, LP | 91,020 | $59.6K | 0.00% | −280−0.3% | Reduced |
| Acadian Asset Management LLC | 90,247 | $57.0K | 0.00% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 66,711 | $43.7K | 0.00% | −10,100−13.1% | Reduced |
| State Street Corp | 62,072 | $40.6K | 0.00% | 00.0% | Unchanged |
| Citadel Advisors LLC | 52,811 | $34.6K | 0.00% | +52,811 | New |
| Wells Fargo & Company | 42,200 | $27.6K | 0.00% | +1,900+4.7% | Added |
| Northern Trust Corp | 38,124 | $25.0K | 0.00% | −35,478−48.2% | Reduced |
| Morgan Stanley | 36,484 | $23.9K | 0.00% | 00.0% | Unchanged |
| Squarepoint Ops LLC | 33,270 | $21.8K | 0.00% | +16,124+94.0% | Added |
| Barclays PLC | 15,390 | $10.1K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 15,398 | $10.1K | 0.00% | +7,039+84.2% | Added |
| Great Valley Advisor Group, Inc. | 15,000 | $9.82K | 0.00% | 00.0% | Unchanged |
| ADAR1 Capital Management, LLC | 13,400 | $8.77K | 0.00% | 00.0% | Unchanged |
| Utah Retirement Systems | 13,240 | $8.67K | 0.00% | 00.0% | Unchanged |
| HSBC Holdings PLC | 12,054 | $7.89K | 0.00% | −2,024−14.4% | Reduced |
| Jane Street Group, LLC | 10,624 | $6.95K | 0.00% | +10,624 | New |
| Point72 Asia (Singapore) Pte. Ltd. | 10,007 | $6.55K | 0.00% | −12,645−55.8% | Reduced |
| Mercer Global Advisors Inc | 10,000 | $6.54K | 0.00% | 00.0% | Unchanged |
| Captrust Financial Advisors | 10,000 | $6.54K | 0.00% | 00.0% | Unchanged |
| Bank of America Corp | 8,747 | $5.72K | 0.00% | +9+0.1% | Added |
| Hartford Financial Management Inc. | 6,500 | $4.25K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 5,191 | $3.40K | 0.00% | +1,558+42.9% | Added |
| SBI Securities Co., Ltd. | 4,488 | $2.94K | 0.00% | −868−16.2% | Reduced |
| Federated Hermes, Inc. | 2,209 | $1.45K | 0.00% | −3,782−63.1% | Reduced |
| BNP Paribas Arbitrage, SA | 983 | $643 | 0.00% | −117−10.6% | Reduced |
| Point72 (DIFC) Ltd | 975 | $638 | 0.00% | −4,954−83.6% | Reduced |
| JPMorgan Chase & Co | 944 | $618 | 0.00% | −4−0.4% | Reduced |
| Northeast Financial Consultants Inc | 0 | $0 | 0.00% | −96,422−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −35,736−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −14,817−100.0% | Sold out |
| Citigroup Inc | 0 | $0 | 0.00% | −2,447−100.0% | Sold out |