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.
Q3 2025 vs. Q2 2025
How the institutions holding Rallybio Corp changed between Q2 2025 and Q3 2025.
All holders in Q3 2025All holders in Q2 2025
| Measure | Q2 2025 | Q3 2025 | Change |
|---|---|---|---|
| Holders | 48 | 45 | −3 |
| Shares | 31.2M | 28.3M | −2.90M (−9.3%) |
| Value | $10.5M | $14.1M | +$3.60M (+34.2%) |
New holders (6)
Institutions that held Rallybio Corp at the end of Q3 2025 but not at the end of Q2 2025.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Rangeley Capital, LLC | 83,007 | $41.4K | 0.04% |
| Prudential Financial Inc | 38,400 | $19.2K | 0.00% |
| Resources Investment Advisors, LLC. | 20,000 | $9.98K | 0.00% |
| Citigroup Inc | 9,895 | $4.94K | 0.00% |
| Rockefeller Capital Management L.P. | 550 | $274 | 0.00% |
| Jones Financial Companies LLLP | 90 | $50 | 0.00% |
Sold out (9)
Institutions that held Rallybio Corp at the end of Q2 2025 and filed for Q3 2025 without it.
| Institution | Shares, Q2 2025 | Value, Q2 2025 |
|---|---|---|
| Standard Life Aberdeen plc | 1,595,262 | $539.2K |
| Laurion Capital Management LP | 735,543 | $248.6K |
| Millennium Management LLC | 179,839 | $60.8K |
| Two Sigma Advisers, LP | 88,900 | $30.0K |
| Two Sigma Securities, LLC | 15,153 | $5.12K |
| Jane Street Group, LLC | 11,742 | $3.97K |
| HSBC Holdings PLC | 10,520 | $3.50K |
| Federated Hermes, Inc. | 2,209 | $747 |
| Raymond James Financial Inc | 850 | $288 |