Who Owns Rallybio Corporation (RLYB)?Hedge Fund & Institutional Holders
Institutional Holders
50
as of Q4 2025
Total Institutional Value
$2.878000249400025e+96T
% of Float Held
—
QoQ Change in Holders
+8 / -2
Price History
RLYB — Biggest New Institutional Buyers This Quarter
| Fund | Action | Shares Added | Value Added |
|---|---|---|---|
| ACT Advisors, LLC. | New Position | +13K | +$9.0M |
| AJU IB Investment Co., Ltd. | New Position | +755K | +$4.1M |
| Hartford Financial Management Inc. | New Position | +7K | +$4.0M |
| SBI Securities Co., Ltd. | New Position | +4K | +$2.0M |
| UBS Group AG | Increased | +2K | +$1.8M |
| Canaan Partners XI LLC | New Position | +450K | +$308K |
| Ground Swell Capital, LLC | New Position | +15K | +$10K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | +3K | +$0 |
| GSA CAPITAL PARTNERS LLP | New Position | +19K | +$0 |
| TWO SIGMA ADVISERS, LP | New Position | +19K | +$0 |
| BANK OF AMERICA CORP /DE/ | Increased | +35 | +$0 |
| VANGUARD GROUP INC | Increased | +17K | +$-497K |
| TWO SIGMA INVESTMENTS, LP | Increased | +16K | +$-10.7M |
| XTX Topco Ltd | Increased | +38K | +$-29.5M |
| RENAISSANCE TECHNOLOGIES LLC | Increased | +121K | +$-356.7M |
RLYB — Institutions Reducing or Closing Positions
| Fund | Action | Shares Sold | Value Sold |
|---|---|---|---|
| New Leaf Venture Partners, L.L.C. | Closed Position | -3.3M | -$1.6B |
| CITADEL ADVISORS LLC | Decreased | -185K | -$218.9M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Decreased | -36K | -$68.0M |
| Rangeley Capital, LLC | Decreased | -43K | -$41.4M |
| PRUDENTIAL FINANCIAL INC | Decreased | -9K | -$19.2M |
| Tower Research Capital LLC (TRC) | Decreased | -6K | -$5.1M |
| CITIGROUP INC | Decreased | -6K | -$4.9M |
| Rockefeller Capital Management L.P. | Closed Position | -550 | -$274K |
| ACADIAN ASSET MANAGEMENT LLC | Decreased | -7K | -$44K |
| HRT FINANCIAL LP | Decreased | -11K | -$16K |
| Virtu Financial LLC | Decreased | -12K | -$1K |
| JPMORGAN CHASE & CO | Decreased | -800 | -$0 |
| Almitas Capital LLC | Decreased | -9K | -$-282K |
Top Institutional Holders(Q4 2025)
RLYB Institutional Ownership History
| Quarter | Holders | Total Value | Change |
|---|---|---|---|
| Q4 2025 | 46 | $10.5B | +6 |
| Q3 2025 | 40 | $11.1B | -1 |
| Q2 2025 | 41 | $7.4B | -6 |
| Q1 2025 | 47 | $16.9B | +0 |
| Q4 2024 | 47 | $21.4B | +4 |
| Q3 2024 | 43 | $3.6T | -13 |
| Q2 2024 | 56 | $4.2T | +3 |
| Q1 2024 | 53 | $32.8T | — |
Similar Stocks by Institutional Ownership
As of Q4 2025, 50 institutional investors hold RLYB (Rallybio Corporation). The largest holder is VIKING GLOBAL INVESTORS LP with $2.9B in shares. This quarter, 8 institutions opened new positions and 2 closed their positions.
Frequently Asked Questions
How many hedge funds own RLYB?
As of Q4 2025, 50 institutional investors report holding RLYB (Rallybio Corporation) in their 13F filings.
Who is the largest institutional holder of RLYB?
The largest institutional holder of RLYB is VIKING GLOBAL INVESTORS LP with $2.9B in shares.
Is institutional ownership of RLYB increasing or decreasing?
This quarter, 8 institutions opened new positions in RLYB and 2 closed their positions.