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Rallybio
RLYB

Overview Fund Activity

47 hedge funds and large institutions have $10.5M invested in Rallybio in 2025 Q2 according to their latest regulatory filings, with 6 funds opening new positions, 8 increasing their positions, 12 reducing their positions, and 6 closing their positions.

Holders
47
Holders Change
–
Holders Change %
0%
% of All Funds
0.63%
Holding in Top 10
4
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.05%
New
6
Increased
8
Reduced
12
Closed
6
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

1
AC
1
Almitas Capital
California
$614K
2
UBS Group
2
UBS Group
Switzerland
$40.6K
3
Renaissance Technologies
3
Renaissance Technologies
New York
$164K
4
Fidelity Investments
4
Fidelity Investments
Massachusetts
$632K
5
VF
5
Virtu Financial
New York
$19K

Top Sellers

1
AI
1
Allostery Investments
Connecticut
$0
2
CPX
2
Canaan Partners XI
California
$318K
3
BCM
3
Bridgeway Capital Management
Texas
$0
4
Aberdeen Group
4
Aberdeen Group
United Kingdom
$539K
5
Squarepoint
5
Squarepoint
New York
$0
Name Market Value Shares Shares
Change 		Shares
Change %
Viking Global Investors
1
Viking Global Investors
Connecticut
$1.42M 4,194,777 – –
5VM
2
5AM Venture Management
California
$1.23M 3,630,724 – –
JJ
3
Johnson & Johnson
New Jersey
$1.21M 3,636,363 – –
NLVP
4
New Leaf Venture Partners
New York
$1.12M 3,301,603 – –
TGA
5
TPG GP A
Texas
$1.02M 3,028,414 – –
PBPIA
6
Pivotal bioVenture Partners Investment Advisor
California
$813K 2,404,644 – –
Fidelity Investments
7
Fidelity Investments
Massachusetts
$632K 1,870,276 +85,058 +5%
AC
8
Almitas Capital
California
$614K 1,817,492 +516,911 +40%
Aberdeen Group
9
Aberdeen Group
United Kingdom
$539K 1,595,262 -131,805 -8%
CPX
10
Canaan Partners XI
California
$318K 940,984 -591,568 -39%
Vanguard Group
11
Vanguard Group
Pennsylvania
$308K 909,941 -61,986 -6%
AIIC
12
AJU IB Investment Company
South Korea
$255K 754,678 – –
LCM
13
Laurion Capital Management
New York
$249K 735,543 – –
Renaissance Technologies
14
Renaissance Technologies
New York
$164K 485,032 +88,532 +22%
Mariner
15
Mariner
Kansas
$137K 404,546 – –
Geode Capital Management
16
Geode Capital Management
Massachusetts
$82.8K 245,009 -2,543 -1%
Millennium Management
17
Millennium Management
New York
$60.8K 179,839 -47,391 -21%
BlackRock
18
BlackRock
New York
$52.3K 154,648 -54,771 -26%
UBS Group
19
UBS Group
Switzerland
$40.6K 120,242 +104,844 +681%
Two Sigma Advisers
20
Two Sigma Advisers
New York
$30K 88,900 -2,120 -2%
Acadian Asset Management
21
Acadian Asset Management
Massachusetts
$29K 90,247 – –
Citadel Advisors
22
Citadel Advisors
Florida
$21.9K 64,884 +12,073 +23%
Two Sigma Investments
23
Two Sigma Investments
New York
$21.6K 63,786 -2,925 -4%
State Street
24
State Street
Massachusetts
$21K 62,072 – –
VF
25
Virtu Financial
New York
$19K 56,762 +56,762 New
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