Who Owns Rallybio Corporation (RLYB)?Hedge Fund & Institutional Holders
Institutional Holders
50
as of Q4 2025
Total Institutional Value
$4.142287824942491e+72T
% of Float Held
—
QoQ Change in Holders
+8 / -2
Price History
RLYB — Biggest New Institutional Buyers This Quarter
| Fund | Action | Shares Added | Value Added |
|---|---|---|---|
| AJU IB Investment Co., Ltd. | New Position | +755K | +$4.1M |
| Canaan Partners XI LLC | New Position | +450K | +$308K |
| Ground Swell Capital, LLC | New Position | +15K | +$10K |
| ACT Advisors, LLC. | New Position | +13K | +$9K |
| Hartford Financial Management Inc. | New Position | +7K | +$4K |
| SBI Securities Co., Ltd. | New Position | +4K | +$2K |
| GSA CAPITAL PARTNERS LLP | New Position | +19K | +$0 |
| TWO SIGMA ADVISERS, LP | New Position | +19K | +$0 |
| BANK OF AMERICA CORP /DE/ | Increased | +35 | +$-107K |
| UBS Group AG | Increased | +2K | +$-1.2M |
| TWO SIGMA INVESTMENTS, LP | Increased | +16K | +$-10.7M |
| XTX Topco Ltd | Increased | +38K | +$-29.5M |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | +3K | +$-122.3M |
| RENAISSANCE TECHNOLOGIES LLC | Increased | +121K | +$-356.7M |
| VANGUARD GROUP INC | Increased | +17K | +$-498.1M |
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 |
| Almitas Capital LLC | Decreased | -9K | -$766.8M |
| 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 |
| JPMORGAN CHASE & CO | Decreased | -800 | -$440K |
| 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 |
Top Institutional Holders(Q4 2025)
RLYB Institutional Ownership History
| Quarter | Holders | Total Value | Change |
|---|---|---|---|
| Q4 2025 | 46 | $18.9M | +6 |
| Q3 2025 | 40 | $13.4B | -1 |
| Q2 2025 | 41 | $8.5B | -6 |
| Q1 2025 | 47 | $21.6B | +0 |
| Q4 2024 | 47 | $27.0B | +4 |
| Q3 2024 | 43 | $9.3T | -13 |
| Q2 2024 | 56 | $11.5T | +3 |
| Q1 2024 | 53 | $17.4T | — |
Similar Stocks by Institutional Ownership
As of Q4 2025, 50 institutional investors hold RLYB (Rallybio Corporation). The largest holder is AJU IB Investment Co., Ltd. with $4.1M 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 AJU IB Investment Co., Ltd. with $4.1M in shares.
Is institutional ownership of RLYB increasing or decreasing?
This quarter, 8 institutions opened new positions in RLYB and 2 closed their positions.