Security key
75120L209
- Type / Class
- Equity / COMMON STOCK
- Shares outstanding
- 5,299,981
- Total 13F shares
- 10,000
- Share change
- +10,000
- Total reported value
- $6,861
- Price per share
- $0.69
- Number of holders
- 1
- Value change
- +$6,861
- Number of buys
- 1
Report period
Q4 2025
Institutions
1
Top holders
1
RLYB full security history
Newer quarter: Q1 2026
Rallybio Corp SEC filings
Rallybio Corp company facts
Broader feeds
Reporting periods
Holder history for CUSIP 75120L209
Recent filing periods:
Top shareholders of RLYB - Rallybio Corp - COMMON STOCK (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| FMR LLC |
13F
13D/G
|
Company |
4.3%
from 13D/G
|
1,694,388
|
$845,500 | — | 30 Sep 2025 | |
| VIKING GLOBAL INVESTORS LP |
13F
3/4/5
|
Company · 10%+ Owner |
79%
|
4,194,777
|
$2,093,194 | — | 30 Sep 2025 | |
| JOHNSON & JOHNSON |
13F
|
Company |
69%
|
3,636,363
|
$1,814,545 | — | 30 Sep 2025 | |
| 5AM Venture Management, LLC |
13F
|
Company |
69%
|
3,630,724
|
$1,811,731 | — | 30 Sep 2025 | |
| New Leaf Venture Partners, L.L.C. |
13F
|
Company |
62%
|
3,301,603
|
$1,647,500 | — | 30 Sep 2025 | |
| TPG GP A, LLC |
13F
|
Company |
57%
|
3,028,414
|
$1,514,207 | — | 30 Sep 2025 | |
| Pivotal bioVenture Partners Investment Advisor LLC |
13F
|
Company |
45%
|
2,404,644
|
$1,199,917 | — | 30 Sep 2025 | |
| Almitas Capital LLC |
13F
|
Company |
29%
|
1,538,727
|
$767,825 | — | 30 Sep 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
19%
|
999,627
|
$498,814 | — | 30 Sep 2025 | |
| AJU IB Investment Co., Ltd. |
13F
|
Company |
14%
|
754,678
|
$377,339 | — | 30 Sep 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
13%
|
714,800
|
$356,685 | — | 30 Sep 2025 | |
| Canaan Partners XI LLC |
13F
|
Company |
8.5%
|
450,000
|
$224,550 | — | 30 Sep 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
8.3%
|
438,705
|
$218,914 | — | 30 Sep 2025 | |
| Mariner, LLC |
13F
|
Company |
7.6%
|
404,546
|
$201,868 | — | 30 Sep 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
4.6%
|
245,009
|
$122,285 | — | 30 Sep 2025 | |
| BlackRock, Inc. |
13F
|
Company |
2.7%
|
141,663
|
$70,690 | — | 30 Sep 2025 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
|
Company |
2.6%
|
136,294
|
$68,011 | — | 30 Sep 2025 | |
| ACADIAN ASSET MANAGEMENT LLC |
13F
|
Company |
1.7%
|
90,247
|
$44,000 | — | 30 Sep 2025 | |
| Rangeley Capital, LLC |
13F
|
Company |
1.6%
|
83,007
|
$41,420 | — | 30 Sep 2025 | |
| STATE STREET CORP |
13F
|
Company |
1.2%
|
62,072
|
$30,974 | — | 30 Sep 2025 | |
| XTX Topco Ltd |
13F
|
Company |
1.1%
|
59,108
|
$29,495 | — | 30 Sep 2025 | |
| Virtu Financial LLC |
13F
|
Company |
0.74%
|
39,303
|
$20,000 | — | 30 Sep 2025 | |
| PRUDENTIAL FINANCIAL INC |
13F
|
Company |
0.73%
|
38,400
|
$19,162 | — | 30 Sep 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.72%
|
38,124
|
$19,024 | — | 30 Sep 2025 | |
| HRT FINANCIAL LP |
13F
|
Company |
0.61%
|
32,224
|
$16,000 | — | 30 Sep 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.41%
|
21,453
|
$10,705 | — | 30 Sep 2025 | |
| OneDigital Investment Advisors LLC |
13F
|
Company |
0.38%
|
20,000
|
$9,980 | — | 30 Sep 2025 | |
| GREAT VALLEY ADVISOR GROUP, INC. |
13F
|
Company |
0.28%
|
15,000
|
$7,485 | — | 30 Sep 2025 | |
| Utah Retirement Systems |
13F
|
Company |
0.25%
|
13,240
|
$6,607 | — | 30 Sep 2025 | |
| Tower Research Capital LLC (TRC) |
13F
|
Company |
0.19%
|
10,181
|
$5,080 | — | 30 Sep 2025 | |
| CAPTRUST FINANCIAL ADVISORS |
13F
|
Company |
0.19%
|
10,000
|
$4,990 | — | 30 Sep 2025 | |
| MERCER GLOBAL ADVISORS INC /ADV |
13F
|
Company |
0.19%
|
10,000
|
$4,990 | — | 30 Sep 2025 | |
| CITIGROUP INC |
13F
|
Company |
0.19%
|
9,895
|
$4,938 | — | 30 Sep 2025 | |
| Hartford Financial Management Inc. |
13F
|
Company |
0.12%
|
6,500
|
$3,244 | — | 30 Sep 2025 | |
| BARCLAYS PLC |
13F
|
Company |
0.11%
|
5,719
|
$2,854 | — | 30 Sep 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.09%
|
4,640
|
$2,315 | — | 30 Sep 2025 | |
| SBI Securities Co., Ltd. |
13F
|
Company |
0.08%
|
4,248
|
$2,120 | — | 30 Sep 2025 | |
| UBS Group AG |
13F
|
Company |
0.04%
|
2,371
|
$1,183 | — | 30 Sep 2025 | |
| BNP PARIBAS FINANCIAL MARKETS |
13F
|
Company |
0.02%
|
980
|
$489 | — | 30 Sep 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
0.02%
|
882
|
$440 | — | 30 Sep 2025 | |
| Rockefeller Capital Management L.P. |
13F
|
Company |
0.01%
|
550
|
$274 | — | 30 Sep 2025 | |
| WELLS FARGO & COMPANY/MN |
13F
|
Company |
0.01%
|
300
|
$150 | — | 30 Sep 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0%
|
216
|
$107 | — | 30 Sep 2025 | |
| JONES FINANCIAL COMPANIES LLLP |
13F
|
Company |
0%
|
90
|
$50 | — | 30 Sep 2025 | |
| Allworth Financial LP |
13F
|
Company |
0%
|
50
|
$25 | — | 30 Sep 2025 | |
| 5AM Opportunities I, L.P. |
3/4/5
|
10%+ Owner |
—
class O/S missing
|
3,730,724
|
$30,591,937 | — | 03 Jun 2022 | |
| 5AM Partners V, LLC |
3/4/5
|
10%+ Owner |
—
class O/S missing
|
3,630,724
|
$29,771,937 | — | 07 Mar 2023 | |
| 5AM Ventures V, L.P. |
3/4/5
|
10%+ Owner |
—
class O/S missing
|
2,784,626
|
$22,833,933 | — | 29 Jul 2021 | |
| Jeffrey M. Fryer |
3/4/5
|
Chief Financial Officer & Treasurer |
—
class O/S missing
|
47,048
|
$385,794 | — | 21 Mar 2022 | |
| Stephen Uden |
3/4/5
|
Chief Executive Officer, Director |
—
class O/S missing
|
453,700
|
$317,590 | — | 14 Feb 2025 |
Institutional Holders of Rallybio Corp - COMMON STOCK (RLYB) as of Q4 2025
As of 31 Dec 2025,
Rallybio Corp - COMMON STOCK (RLYB) was held by
1 institutional
shareholder
that filed Form 13F with the SEC.
Together, they reported ownership of
10,000 shares.
The largest 1 holders included
CAPTRUST FINANCIAL ADVISORS.
This page lists
1
institutional shareholders reporting positions in this security
for the Q4 2025 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q4 2025 vs Q4 2025 Across Filers
Q4 2025 holders
1
Q4 2025 holders
1
Holder diff
0
| Investor | Q4 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q4 2025 Value $ | Q4 2025 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.