# RLYB RALLYBIO CORPORATION

RLYB RALLYBIO CORPORATION is a security (CUSIP 75120L100) tracked across SEC portfolio filings. 3 institutional managers reported $2.3M on Form 13F as of 2025-12-31.

## Summary

- Issuer: RLYB
- Class: RALLYBIO CORPORATION
- CUSIP: 75120L100
- 13F holders: 3
- 13F value: $2.3M
- 13F period: 2025-12-31
- N-PORT fund positions: 0

## Top institutional holders (Form 13F)

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [New Leaf Venture Partners, L.L.C.](https://search.stillhousedata.com/firm/163897) | New York, NY | $1.6M | 3,301,603 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $697K | 1,016,249 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | BIRMINGHAM, AL | — | 0 |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/75120L100.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

---

Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.