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.
Q2 2026 vs. Q1 2026
How the institutions holding Rallybio Corp changed between Q1 2026 and Q2 2026.
All holders in Q2 2026All holders in Q1 2026
| Measure | Q1 2026 | Q2 2026 | Change |
|---|---|---|---|
| Holders | 38 | 37 | −1 |
| Shares | 4.67M | 4.07M | −601.2K (−12.9%) |
| Value | $41.9M | $65.0M | +$23.2M (+55.4%) |
New holders (9)
Institutions that held Rallybio Corp at the end of Q2 2026 but not at the end of Q1 2026.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Jane Street Group, LLC | 47,423 | $758.8K | 0.00% |
| HRT Financial LP | 25,657 | $410.0K | 0.00% |
| Two Sigma Investments, LP | 16,619 | $265.9K | 0.00% |
| State Street Corp | 12,996 | $207.9K | 0.00% |
| Quadrature Capital Ltd | 12,995 | $207.9K | 0.00% |
| Caitong International Asset Management Co., Ltd | 434 | $6.94K | 0.00% |
| Truvestments Capital LLC | 129 | $2.06K | 0.00% |
| EverSource Wealth Advisors, LLC | 31 | $496 | 0.00% |
| Barclays PLC | 3 | $48 | 0.00% |
Sold out (10)
Institutions that held Rallybio Corp at the end of Q1 2026 and filed for Q2 2026 without it.
| Institution | Shares, Q1 2026 | Value, Q1 2026 |
|---|---|---|
| Cormorant Asset Management, LP | 400,000 | $3.59M |
| Balyasny Asset Management LLC | 376,573 | $3.38M |
| Laurion Capital Management LP | 302,756 | $2.72M |
| 5AM Venture Management, LLC | 291,788 | $2.62M |
| Johnson & Johnson | 152,901 | $1.37M |
| AJU IB Investment Co., Ltd. | 94,334 | $846.2K |
| Deltec Asset Management LLC | 33,750 | $302.7K |
| GTS Securities LLC | 22,016 | $197.5K |
| Acadian Asset Management LLC | 10,433 | $92.0K |
| Tower Research Capital LLC (TRC) | 907 | $8.14K |