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OmniAb
OABI

Overview Fund Activity

142 hedge funds and large institutions have $95.3M invested in OmniAb in 2025 Q2 according to their latest regulatory filings, with 25 funds opening new positions, 55 increasing their positions, 30 reducing their positions, and 32 closing their positions.

Holders
142
Holders Change
-9
Holders Change %
-5.96%
% of All Funds
1.91%
Holding in Top 10
2
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+100%
% of All Funds
0.03%
New
25
Increased
55
Reduced
30
Closed
32
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

1
WCM
1
Whitefort Capital Management
New York
$17.8M
2
Citadel Advisors
2
Citadel Advisors
Florida
$3.71M
3
KLP
3
Kent Lake PR
Puerto Rico
$3.05M
4
Jacobs Levy Equity Management
4
Jacobs Levy Equity Management
New Jersey
$1.92M
5
Renaissance Technologies
5
Renaissance Technologies
New York
$1.23M

Top Sellers

1
Janus Henderson Group
1
Janus Henderson Group
United Kingdom
$0
2
Macquarie Group
2
Macquarie Group
Australia
$0
3
RCMNY
3
Rubric Capital Management (New York)
New York
$0
4
CC
4
Chicago Capital
Illinois
$0
5
SDJVC
5
St. Denis J. Villere & Co
Louisiana
$0
Name Market Value Shares Shares
Change 		Shares
Change %
CF
151
Corebridge Financial
Texas
– – -46,712 Closed
GFA
152
Gallagher Fiduciary Advisors
Illinois
– – -43,696 Closed
AI
153
Atria Investments
North Carolina
– – -43,563 Closed
HF
154
HRT Financial
New York
– – -34,647 Closed
MFIM
155
Mesirow Financial Investment Management
Illinois
– – -30,764 Closed
SPA
156
Sherbrooke Park Advisers
New York
– – -20,388 Closed
CAPTRUST Financial Advisors
157
CAPTRUST Financial Advisors
North Carolina
– – -16,837 Closed
PP
158
PDT Partners
New York
– – -14,709 Closed
ECM
159
ExodusPoint Capital Management
New York
– – -14,315 Closed
Public Employees Retirement Association of Colorado
160
Public Employees Retirement Association of Colorado
Colorado
– – -14,264 Closed
HSBC Holdings
161
HSBC Holdings
United Kingdom
– – -11,020 Closed
Federated Hermes
162
Federated Hermes
Pennsylvania
– – -4,157 Closed
Lazard Asset Management
163
Lazard Asset Management
New York
– – -3,693 Closed
RA
164
Rise Advisors
New York
– – -1,725 Closed
Northwestern Mutual Wealth Management
165
Northwestern Mutual Wealth Management
Wisconsin
– – -1,141 Closed
CCM
166
Coldstream Capital Management
Washington
– – -474 Closed
CPG
167
Cornerstone Planning Group
New Jersey
– – -249 Closed
SIC
168
Salem Investment Counselors
North Carolina
– – -60 Closed
TWD
169
True Wealth Design
Ohio
– – -42 Closed
RIL
170
Rothschild Investment LLC
Illinois
– – -40 Closed
Simplex Trading
171
Simplex Trading
Illinois
$0 200 -31 -13%
MG
172
Mather Group
Illinois
– – -21 Closed
PWM
173
Parkworth Wealth Management
California
– – -4 Closed
IA
174
IFP Advisors
Florida
– – – –
C
175
Covestor
United Kingdom
$0 131 +37 +39%
3 4 5 6
7