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OmniAb
OABI

157 hedge funds and large institutions have $517M invested in OmniAb in 2023 Q4 according to their latest regulatory filings, with 26 funds opening new positions, 44 increasing their positions, 42 reducing their positions, and 16 closing their positions.

New
Increased
Maintained
Reduced
Closed

303% more call options, than puts

Call options by funds: $1.11M | Put options by funds: $276K

63% more first-time investments, than exits

New positions opened: 26 | Existing positions closed: 16

50% more funds holding in top 10

Funds holding in top 10: 2 → 3 (+1)

45% more capital invested

Capital invested by funds: $356M → $517M (+$161M)

13.34% more ownership

Funds ownership: 59.13% → 72.47% (+13%)

6% more funds holding

Funds holding: 148 → 157 (+9)

5% more repeat investments, than reductions

Existing positions increased: 44 | Existing positions reduced: 42

Holders
157
Holders Change
+9
Holders Change %
+6.08%
% of All Funds
2.29%
Holding in Top 10
3
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+50%
% of All Funds
0.04%
New
26
Increased
44
Reduced
42
Closed
16
Calls
$1.11M
Puts
$276K
Net Calls
+$836K
Net Calls Change
+$620K

Top Buyers

Rank Fund Capital Flow
1
Morgan Stanley
Morgan Stanley
New York
+$3.22M
2
BlackRock
BlackRock
New York
+$2.56M
3
William Blair Investment Management
William Blair Investment Management
Illinois
+$2.33M
4
Dimensional Fund Advisors
Dimensional Fund Advisors
Texas
+$1.44M
5
FSCM
First Sabrepoint Capital Management
Texas
+$1.02M

Top Sellers

Rank Fund Capital Flow
1
Millennium Management
Millennium Management
New York
-$7.49M
2
KCM
Kornitzer Capital Management
Kansas
-$2.51M
3
1CM
1492 Capital Management
Wisconsin
-$2.28M
4
Invesco
Invesco
Georgia
-$2.23M
5
Macquarie Group
Macquarie Group
Australia
-$1.63M
Name Holding Trade Value Shares
Change 		Change in
Stake
ACM
26
ADAR1 Capital Management
Texas
$2.95M +$2.35M +478,171 New
Bank of New York Mellon
27
Bank of New York Mellon
New York
$2.87M +$229K +46,515 +11%
Fuller & Thaler Asset Management
28
Fuller & Thaler Asset Management
California
$2.86M – – –
Bank of America
29
Bank of America
North Carolina
$2.62M -$13.3K -2,702 -0.6%
AC
30
AWH Capital
Texas
$2.61M -$655K -133,099 -24%
IP
31
Isthmus Partners
Wisconsin
$1.92M +$237K +48,138 +18%
KLC
32
Kent Lake Capital
Nevada
$1.85M -$473K -96,154 -24%
TA
33
TLS Advisors
Florida
$1.54M – – –
D.E. Shaw & Co
34
D.E. Shaw & Co
New York
$1.53M +$208K +42,325 +21%
Connor, Clark & Lunn Investment Management (CC&L)
35
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$1.51M +$74.6K +15,164 +7%
N
36
Nuveen
North Carolina
$1.41M +$8.89K +1,807 +0.8%
JP Morgan Chase
37
JP Morgan Chase
New York
$1.37M +$351K +71,284 +47%
Goldman Sachs
38
Goldman Sachs
New York
$1.17M +$91.2K +18,542 +11%
TL
39
TowerView LLC
New York
$1.08M +$320K +65,000 +59%
Swiss National Bank
40
Swiss National Bank
Switzerland
$1.06M -$92.9K -18,900 -10%
CC
41
Cornerstone Capital
California
$1.02M – – –
RA
42
Royce & Associates
New York
$988K +$563K +114,485 +251%
RhumbLine Advisers
43
RhumbLine Advisers
Massachusetts
$978K +$39.1K +7,956 +5%
Barclays
44
Barclays
United Kingdom
$896K +$557K +113,170 +352%
UBS Group
45
UBS Group
Switzerland
$757K +$251K +51,036 +71%
Fidelity Investments
46
Fidelity Investments
Massachusetts
$709K +$342K +69,586 +153%
AllianceBernstein
47
AllianceBernstein
Tennessee
$701K – – –
CPA
48
Court Place Advisors
Maryland
$689K – – –
Aberdeen Group
49
Aberdeen Group
United Kingdom
$640K – – –
California State Teachers Retirement System (CalSTRS)
50
California State Teachers Retirement System (CalSTRS)
California
$575K -$20.3K -4,119 -4%
1
2
3 4 5

OABI Hedge Fund Activity: Q4 2023 in Review

157 of the 6,859 institutional investors tracked by Wall St. Rank reported a position in OmniAb (OABI) for Q4 2023, worth a combined $517M — up 45% from $356M a quarter earlier.

Buyers outnumbered sellers: 26 funds opened new OABI positions and 16 closed out — a net gain of 10 holders — while 44 added to existing stakes and 42 trimmed.

The largest buyer was Morgan Stanley, adding an estimated $3.22M. The largest seller was Millennium Management, cutting an estimated $7.49M.

  • 157 institutional investors held OmniAb (OABI) as of Q4 2023, up from 148 in Q3 2023.
  • Funds reported $517M of OmniAb stock for Q4 2023, up 45% quarter-over-quarter.
  • 26 funds opened new OmniAb positions in Q4 2023 and 16 closed out, a net change of +10 holders.
  • The largest OmniAb buyer in Q4 2023 was Morgan Stanley, an estimated $3.22M added.
  • The largest OmniAb seller in Q4 2023 was Millennium Management, an estimated $7.49M sold.

Based on aggregated 13F filings for Q4 2023.