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OmniAb
OABI

Overview Fund Activity

151 hedge funds and large institutions have $152M invested in OmniAb in 2025 Q1 according to their latest regulatory filings, with 16 funds opening new positions, 43 increasing their positions, 54 reducing their positions, and 26 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
151
Holders Change
-12
Holders Change %
-7.36%
% of All Funds
2.05%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.01%
New
16
Increased
43
Reduced
54
Closed
26
Calls
$2K
Puts
$7K
Net Calls
-$5K
Net Calls Change
-$109K

Top Buyers

1
WCM
Whitefort Capital Management
New York
+$9.4M
2
PMG
Private Management Group
California
+$712K
3
Vanguard Group
Vanguard Group
Pennsylvania
+$298K
4
Macquarie Group
Macquarie Group
Australia
+$293K
5
RA
Royce & Associates
New York
+$264K

Top Sellers

1
KCM
Kornitzer Capital Management
Kansas
-$3.18M
2
FSCM
First Sabrepoint Capital Management
Texas
-$2.52M
3
JPMorgan Chase & Co
JPMorgan Chase & Co
New York
-$920K
4
CC
Chicago Capital
Illinois
-$852K
5
OCM
Orchard Capital Management
Illinois
-$774K
Name Holding Trade Value Shares
Change 		Shares
Change %
Jane Street
51
Jane Street
New York
$194K +$40.4K +16,823 +26%
Citigroup
52
Citigroup
New York
$172K -$16.4K -6,850 -9%
Wells Fargo
53
Wells Fargo
California
$170K +$19.4K +8,098 +13%
Mirae Asset Global ETFs Holdings
54
Mirae Asset Global ETFs Holdings
Hong Kong
$132K +$5.69K +2,371 +4%
XT
55
XTX Topco
Cayman Islands
$128K +$4.07K +1,694 +3%
CIS
56
Connors Investor Services
Pennsylvania
$119K +$48K +20,000 +68%
CF
57
Corebridge Financial
Texas
$112K +$1.99K +830 +2%
William Blair & Company
58
William Blair & Company
Illinois
$108K – – –
GFA
59
Gallagher Fiduciary Advisors
Illinois
$105K +$16.7K +6,944 +19%
AI
60
Atria Investments
North Carolina
$105K +$17K +7,063 +19%
T. Rowe Price Associates
61
T. Rowe Price Associates
Maryland
$95K +$2.66K +1,100 +3%
Manulife (Manufacturers Life Insurance)
62
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$89.2K +$749 +312 +0.8%
MIM
63
MetLife Investment Management
New Jersey
$87.9K -$28.3K -11,798 -24%
HF
64
HRT Financial
New York
$83K +$24.5K +10,215 +42%
SG Americas Securities
65
SG Americas Securities
New York
$76K -$21.8K -9,056 -22%
Ameriprise
66
Ameriprise
Minnesota
$70.3K -$21.8K -9,079 -24%
LCM
67
Legato Capital Management
California
$68.9K -$3.76K -1,565 -5%
VOYA Investment Management
68
VOYA Investment Management
Georgia
$66.6K -$8.38K -3,493 -11%
State Board of Administration of Florida Retirement System
69
State Board of Administration of Florida Retirement System
Florida
$64.2K – – –
Renaissance Technologies
70
Renaissance Technologies
New York
$63.8K +$63.8K +26,600 New
ProShare Advisors
71
ProShare Advisors
Maryland
$62.6K -$13.5K -5,624 -18%
MFIM
72
Mesirow Financial Investment Management
Illinois
$59.4K – – –
NSEDCP
73
NJ State Employees Deferred Compensation Plan
New Jersey
$58.8K – – –
CUAMC
74
China Universal Asset Management Company
China
$58.3K -$3.33K -1,386 -5%
BL
75
BFSG LLC
California
$53.3K +$4.13K +1,720 +8%
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