Security key
75120L209
- Security type / class
- Equity / COMMON STOCK
- Total 13F shares
- 14,831
- Total 13F value
- $237,296
- Share change
- -267,543
- SEC-reported price per share
- $16.00
- Number of holders
- 6
- Value change
- -$2,305,363
- Number of buys
- 3
- Number of sells
- 4
- Shares outstanding
- 5,298,133
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q2 2026
Institutions
6
Top holders
8
RLYB full security history
Ownership snapshot
Full 13F holder table
Previous quarter: Q1 2026
Rallybio Corp SEC filings
Rallybio Corp company facts
Broader feeds
Reporting periods
Holder history for CUSIP 75120L209
Recent filing periods:
Ownership snapshot
Top reported holders of RLYB - Rallybio Corp - COMMON STOCK (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
ADAR1 Capital Management,...
Disclosed value leader
ADAR1 Capital Management,...
Comparable rows
15/15
Latest evidence
30 Jun 2026
13D/G
3/4/5
13F
Lead comparable stake: 18%
13D/G row: ADAR1 Capital Management, LLC
Showing 1-6 of 15 holder rows.
Quick read
ADAR1 Capital Management, LLC leads the comparable SEC ownership view at 18%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens ADAR1 Capital Management, LLC's linked filing trail.
Comparable ownership
Top 5
ADAR1 Capital Management, LLC
18%
FMR LLC
15%
VIKING GLOBAL INVESTORS LP
10%
Cormorant Asset Management, LP
7.6%
TPG GP A, LLC
7.2%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| ADAR1 Capital Management, LLC |
13D/G
3/4/5
13F
10%+ Owner · Company
|
18%
|
$13,293,151
926,352 shares
|
$0 | 31 May 2026 |
| FMR LLC |
13D/G
3/4/5
13F
Other*, 10%+ Owner · Company
|
15%
|
$12,715,520
794,720 shares
|
+$3,726,752 | 30 Jun 2026 |
| VIKING GLOBAL INVESTORS LP |
13F
13D/G
3/4/5
Company · 10%+ Owner
|
10%
from 13D/G
|
$4,703,393
524,347 shares
|
— | 31 Mar 2026 |
| Cormorant Asset Management, LP |
13F
13D/G
Company
|
7.6%
from 13D/G
|
$3,588,000
400,000 shares
|
— | 31 Mar 2026 |
| TPG GP A, LLC |
13F
13D/G
Company
|
7.2%
from 13D/G
|
$3,395,602
378,551 shares
|
— | 31 Mar 2026 |
| BALYASNY ASSET MANAGEMENT L.P. |
13F
13D/G
Company
|
7.1%
from 13D/G
|
$3,377,860
376,573 shares
|
— | 31 Mar 2026 |
How to read this table
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.
13F holder rows
Institutional holders as of Q2 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
6
Shares
14,831
Rows available
6
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q2 2026 vs Q1 2026 Across Filers
Q1 2026 holders
38
Q2 2026 holders
6
Holder diff
-32
| Investor | Q1 2026 Shares | Q2 2026 Shares | Share Diff | Share Chg % | Q1 2026 value | Q2 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend