OmniAb, Inc. - OABIW

Detailed investor-level table based on 13F positions.
Early Q1 2026 data: only 6 institutional holders reported so far. The full shareholder list will grow as more funds file with the SEC.

Shareholders (13F)

Quarter: Q4 2025 · Compare: Q3 2025
13D/13G major owners: Ownership tab.
Methodology: Market value and % of portfolio use SEC reported VALUE ($000). For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received. Details.
Rows: 0
Investor History Status Shares held Market value ($000) % of portfolio Previous % Rank Change in shares % change in shares Source Date reported
Whitefort Capital Management, LP History No change 14,223,658 26,313 6.73% 6.73% 1 0 0.0% Q4 2025 Feb 17, 2026
BlackRock, Inc. History Added to 8,064,981 14,920 0.0% 0.0% 2 +1,100,759 15.81% Q4 2025 Feb 12, 2026
VANGUARD GROUP INC History Added to 5,625,197 10,406 0.0% 0.0% 3 +477,136 9.27% Q4 2025 Jan 29, 2026
CADIAN CAPITAL MANAGEMENT, LP History Added to 4,434,954 8,204 0.59% 0.35% 4 +759,386 20.66% Q4 2025 Feb 17, 2026
GEODE CAPITAL MANAGEMENT, LLC History Added to 2,722,692 5,037 0.0% 0.0% 5 +396,456 17.04% Q4 2025 Feb 09, 2026
PRIVATE MANAGEMENT GROUP INC History Reduced 2,420,478 4,477 0.13% 0.12% 6 -97,801 -3.88% Q4 2025 Feb 12, 2026
RICE HALL JAMES & ASSOCIATES, LLC History Reduced 2,401,088 4,442 0.24% 0.21% 7 -10,950 -0.45% Q4 2025 Feb 17, 2026
DIMENSIONAL FUND ADVISORS LP History Reduced 2,152,593 3,982 0.0% 0.0% 8 -395,691 -15.53% Q4 2025 Feb 12, 2026
STATE STREET CORP History Reduced 2,048,996 3,790 0.0% 0.0% 9 -45,850 -2.19% Q4 2025 Feb 13, 2026
TOWERVIEW LLC History Added to 1,000,000 1,850 1.34% 0.97% 10 +168,900 20.32% Q4 2025 Feb 04, 2026
CHARLES SCHWAB INVESTMENT MANAGEMENT INC History Added to 966,026 1,787 0.0% 0.0% 11 +180,549 22.99% Q4 2025 Feb 13, 2026
Nuveen, LLC History Added to 874,512 1,617 0.0% 0.0% 12 +2 0.0% Q4 2025 Feb 12, 2026
NORTHERN TRUST CORP History Added to 829,021 1,533 0.0% 0.0% 13 +10,555 1.29% Q4 2025 Feb 17, 2026
ISTHMUS PARTNERS, LLC History Added to 721,309 1,334 0.15% 0.24% 14 +52,238 7.81% Q4 2025 Feb 05, 2026
ADAR1 Capital Management, LLC History Reduced 702,190 1,299 0.1% 0.16% 15 -388,438 -35.62% Q4 2025 Feb 18, 2026
Stonepine Capital Management, LLC History Reduced 701,000 1,296 0.95% 2.79% 16 -1,441,857 -67.29% Q4 2025 Feb 13, 2026
MILLENNIUM MANAGEMENT LLC History Added to 673,395 1,020 0.0% 0.0% 17 +387,594 135.62% Q4 2025 Feb 17, 2026
GOLDMAN SACHS GROUP INC History Reduced 540,277 999 0.0% 0.0% 18 -47,509 -8.08% Q4 2025 Mar 25, 2026
TWO SIGMA INVESTMENTS, LP History Added to 423,104 782 0.0% 0.0% 19 +131,369 45.03% Q4 2025 Feb 17, 2026
MORGAN STANLEY History Reduced 389,687 720 0.0% 0.0% 20 -430,535 -52.49% Q4 2025 Feb 13, 2026
D. E. Shaw & Co., Inc. History Added to 383,152 708 0.0% 0.0% 21 +196,871 105.68% Q4 2025 Feb 17, 2026
CITADEL ADVISORS LLC History Reduced 311,134 575 0.0% 0.0% 22 -551,865 -63.95% Q4 2025 Feb 17, 2026
JPMORGAN CHASE & CO History Reduced 293,168 542 0.0% 0.0% 23 -469,744 -61.57% Q4 2025 Feb 11, 2026
Woodline Partners LP History Reduced 285,714 528 0.0% 0.02% 24 -2,571,428 -90.0% Q4 2025 Feb 17, 2026
Bank of New York Mellon Corp History Added to 268,645 496 0.0% 0.0% 25 +4,947 1.88% Q4 2025 Feb 10, 2026
RENAISSANCE TECHNOLOGIES LLC History Reduced 242,700 448 0.0% 0.0% 26 -280,754 -53.63% Q4 2025 Feb 12, 2026
JACOBS LEVY EQUITY MANAGEMENT, INC History New 238,189 440 0.0% 27 +238,189 New Q4 2025 Feb 13, 2026
FMR LLC History Added to 198,980 368 0.0% 0.0% 28 +44,434 28.75% Q4 2025 Feb 17, 2026
BRIDGEWAY CAPITAL MANAGEMENT, LLC History Added to 198,900 367 0.01% 0.01% 29 +45,000 29.24% Q4 2025 Feb 17, 2026
TWO SIGMA ADVISERS, LP History Added to 197,530 365 0.0% 0.0% 30 +71,500 56.73% Q4 2025 Feb 17, 2026
Arbiter Partners Capital Management LLC History Added to 192,585 356 0.17% 0.15% 31 +32,056 19.97% Q4 2025 Feb 12, 2026
BARCLAYS PLC History Added to 165,557 306 0.0% 0.0% 32 +21,847 15.2% Q4 2025 Feb 13, 2026
RHUMBLINE ADVISERS History Added to 162,773 301 0.0% 0.0% 33 +1,837 1.14% Q4 2025 Feb 13, 2026
NOMURA HOLDINGS INC History New 154,951 286 0.0% 34 +154,951 New Q4 2025 Feb 17, 2026
ALLIANCEBERNSTEIN L.P. History No change 150,592 278 0.0% 0.0% 35 0 0.0% Q4 2025 Feb 17, 2026
Invesco Ltd. History Added to 136,309 252 0.0% 0.0% 36 +12,258 9.88% Q4 2025 Feb 19, 2026
JANE STREET GROUP, LLC History Reduced 135,378 250 0.0% 0.0% 37 -53,704 -28.4% Q4 2025 Feb 12, 2026
WELLS FARGO & COMPANY/MN History Added to 125,636 232 0.0% 0.0% 38 +45,040 55.88% Q4 2025 Feb 13, 2026
Cornerstone Capital, Inc. History No change 109,211 202 0.02% 0.02% 39 0 0.0% Q4 2025 Feb 12, 2026
BANK OF AMERICA CORP /DE/ History Added to 83,088 153 0.0% 0.0% 40 +35,058 72.99% Q4 2025 Feb 17, 2026
DEUTSCHE BANK AG\ History Reduced 77,225 142 0.0% 0.0% 41 -772 -0.99% Q4 2025 Feb 11, 2026
TLS Advisors LLC History Reduced 70,000 137 0.36% 1.13% 42 -180,185 -72.02% Q4 2025 Feb 04, 2026
UBS Group AG History Added to 67,974 125 0.0% 0.0% 43 +28,310 71.37% Q4 2025 Jan 29, 2026
CONNORS INVESTOR SERVICES INC History No change 61,941 114 0.01% 0.01% 44 0 0.0% Q4 2025 Feb 09, 2026
PRICE T ROWE ASSOCIATES INC /MD/ History No change 53,190 100 0.0% 0.0% 45 0 0.0% Q4 2025 Feb 17, 2026
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. History Added to 48,843 90 0.0% 0.0% 46 +5,395 12.42% Q4 2025 Feb 17, 2026
ACADIAN ASSET MANAGEMENT LLC History New 47,625 88 0.0% 47 +47,625 New Q4 2025 Feb 10, 2026
BOOTHBAY FUND MANAGEMENT, LLC History New 47,596 88 0.0% 48 +47,596 New Q4 2025 Feb 17, 2026
SEI INVESTMENTS CO History Reduced 42,860 79 0.0% 0.0% 49 -38,185 -47.12% Q4 2025 Feb 13, 2026
BLAIR WILLIAM & CO/IL History Reduced 43,211 79 0.0% 0.0% 50 -1,960 -4.34% Q4 2025 Feb 17, 2026
INTECH INVESTMENT MANAGEMENT LLC History Reduced 37,820 69 0.0% 0.0% 51 -12,745 -25.21% Q4 2025 Feb 10, 2026
MetLife Investment Management, LLC History Reduced 36,552 67 0.0% 0.0% 52 -20,108 -35.49% Q4 2025 Feb 12, 2026
WOODSTOCK CORP History Reduced 35,240 65 0.01% 0.05% 53 -316,513 -89.98% Q4 2025 Jan 14, 2026
AMERIPRISE FINANCIAL INC History Reduced 32,749 60 0.0% 0.0% 54 -200,038 -85.93% Q4 2025 Feb 17, 2026
Vanguard Personalized Indexing Management, LLC History Reduced 31,437 58 0.0% 0.0% 55 -10,257 -24.6% Q4 2025 Feb 13, 2026
Legato Capital Management LLC History Added to 30,679 56 0.0% 0.0% 56 +2,490 8.83% Q4 2025 Feb 06, 2026
MANUFACTURERS LIFE INSURANCE COMPANY, THE History New 28,943 53 0.0% 57 +28,943 New Q4 2025 Feb 13, 2026
ProShare Advisors LLC History Added to 25,576 47 0.0% 0.0% 59 +5,213 25.6% Q4 2025 Feb 06, 2026
BNP PARIBAS FINANCIAL MARKETS History Added to 25,870 47 0.0% 0.0% 58 +4,149 19.1% Q4 2025 Feb 10, 2026
Brevan Howard Capital Management LP History Reduced 24,415 45 0.0% 0.0% 60 -27,855 -53.29% Q4 2025 Feb 17, 2026
AQR CAPITAL MANAGEMENT LLC History Added to 24,153 44 0.0% 0.0% 61 +1,066 4.62% Q4 2025 Feb 17, 2026
SG Americas Securities, LLC History Added to 23,141 43 0.0% 0.0% 62 +11,369 96.58% Q4 2025 Jan 09, 2026
China Universal Asset Management Co., Ltd. History Added to 23,457 43 0.0% 0.0% 63 +1,949 9.06% Q4 2025 Jan 29, 2026
Police & Firemen's Retirement System of New Jersey History No change 22,568 41 0.0% 0.0% 64 0 0.0% Q4 2025 Feb 13, 2026
HighTower Advisors, LLC History No change 21,382 39 0.0% 0.0% 65 0 0.0% Q4 2025 Feb 06, 2026
ALGERT GLOBAL LLC History New 20,498 38 0.0% 66 +20,498 New Q4 2025 Feb 17, 2026
Squarepoint Ops LLC History Reduced 20,326 37 0.0% 0.0% 68 -15,105 -42.63% Q4 2025 Feb 13, 2026
BBR PARTNERS, LLC History No change 20,000 37 0.0% 0.0% 67 0 0.0% Q4 2025 Feb 11, 2026
BFSG, LLC History No change 20,435 37 0.0% 0.0% 69 0 0.0% Q4 2025 Jan 22, 2026
VOYA INVESTMENT MANAGEMENT LLC History No change 19,496 36 0.0% 0.0% 70 0 0.0% Q4 2025 Feb 12, 2026
Connor, Clark & Lunn Investment Management Ltd. History New 18,945 35 0.0% 72 +18,945 New Q4 2025 Feb 10, 2026
LPL Financial LLC History Added to 19,354 35 0.0% 0.0% 71 +554 2.95% Q4 2025 Feb 11, 2026
Thrive Wealth Management, LLC History No change 17,281 31 0.0% 0.0% 73 0 0.0% Q4 2025 Jan 12, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP History Added to 15,958 29 0.0% 0.0% 74 +1,033 6.92% Q4 2025 Feb 17, 2026
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO History Reduced 15,321 28 0.0% 0.0% 75 -81,040 -84.1% Q4 2025 Feb 17, 2026
OSAIC HOLDINGS, INC. History Added to 15,468 28 0.0% 0.0% 76 +1,946 14.39% Q4 2025 Feb 17, 2026
VICTORY CAPITAL MANAGEMENT INC History Added to 12,552 23 0.0% 0.0% 77 +2,481 24.64% Q4 2025 Feb 13, 2026
State of Wyoming History Added to 12,517 22 0.0% 78 +12,243 4468.25% Q4 2025 Feb 11, 2026
XTX Topco Ltd History New 12,022 22 0.0% 79 +12,022 New Q4 2025 Feb 17, 2026
NEW YORK STATE COMMON RETIREMENT FUND History No change 11,806 21 0.0% 0.0% 80 0 0.0% Q4 2025 Feb 12, 2026
Russell Investments Group, Ltd. History Added to 10,939 20 0.0% 0.0% 81 +1,353 14.11% Q4 2025 Feb 17, 2026
CHOREO, LLC History Reduced 10,451 19 0.0% 0.0% 83 -1,929 -15.58% Q4 2025 Jan 23, 2026
Avior Wealth Management, LLC History No change 10,704 19 0.0% 0.0% 82 0 0.0% Q4 2025 Jan 06, 2026
Legal & General Group Plc History No change 9,557 17 0.0% 0.0% 84 0 0.0% Q4 2025 Feb 09, 2026
Ameritas Investment Partners, Inc. History No change 9,652 17 0.0% 0.0% 85 0 0.0% Q4 2025 Feb 11, 2026
Steigerwald, Gordon & Koch Inc. History No change 7,673 14 0.0% 0.0% 86 0 0.0% Q4 2025 Jan 23, 2026
MAI Capital Management History New 6,736 12 0.0% 88 +6,736 New Q4 2025 Feb 13, 2026
CITIGROUP INC History Reduced 6,868 12 0.0% 0.0% 87 -4,250 -38.23% Q4 2025 Feb 13, 2026
Mirae Asset Global Investments Co., Ltd. History Added to 6,995 12 0.0% 0.0% 89 +2,251 47.45% Q4 2025 Jan 26, 2026
Tower Research Capital LLC (TRC) History Reduced 6,270 11 0.0% 0.0% 91 -2,073 -24.85% Q4 2025 Feb 17, 2026
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM History Reduced 6,476 11 0.0% 0.0% 90 -216 -3.23% Q4 2025 Feb 17, 2026
Sterling Capital Management LLC History Added to 5,622 10 0.0% 0.0% 92 +55 0.99% Q4 2025 Feb 13, 2026
ROYAL BANK OF CANADA History New 4,802 9 0.0% 93 +4,802 New Q4 2025 Feb 17, 2026
AMALGAMATED BANK History Added to 3,304 6 0.0% 0.0% 94 +134 4.23% Q4 2025 Feb 05, 2026
CWM, LLC History Reduced 2,493 5 0.0% 0.0% 95 -3,562 -58.83% Q4 2025 Jan 26, 2026
GF FUND MANAGEMENT CO. LTD. History Added to 2,828 5 0.0% 0.0% 96 +241 9.32% Q4 2025 Jan 27, 2026
Smartleaf Asset Management LLC History Reduced 2,458 4 0.0% 0.0% 98 -931 -27.47% Q4 2025 Feb 13, 2026
Jackson, Grant Investment Advisers, Inc. History No change 2,450 4 0.0% 0.0% 97 0 0.0% Q4 2025 Jan 27, 2026
Redwood Park Advisors LLC History No change 2,184 4 0.0% 0.0% 99 0 0.0% Q4 2025 Feb 17, 2026
Allworth Financial LP History New 2,127 3 0.0% 100 +2,127 New Q4 2025 Feb 05, 2026
Parallel Advisors, LLC History Added to 1,854 3 0.0% 101 +1,850 46250.0% Q4 2025 Feb 11, 2026
EverSource Wealth Advisors, LLC History Added to 2,003 3 0.0% 0.0% 102 +1,338 201.2% Q4 2025 Feb 06, 2026
Spire Wealth Management History Reduced 1,200 2 0.0% 0.0% 104 -5,310 -81.57% Q4 2025 Jan 14, 2026
Larson Financial Group LLC History No change 1,470 2 0.0% 0.0% 103 0 0.0% Q4 2025 Feb 06, 2026
Optiver Holding B.V. History No change 1,256 2 0.0% 0.0% 105 0 0.0% Q4 2025 Feb 17, 2026
North Star Investment Management Corp. History No change 550 1 0.0% 106 0 0.0% Q4 2025 Jan 30, 2026
Cheviot Value Management, LLC History No change 980 1 0.0% 0.0% 107 0 0.0% Q4 2025 Feb 03, 2026
Daiwa Securities Group Inc. History No change 475 1 0.0% 0.0% 108 0 0.0% Q4 2025 Feb 11, 2026
TANG CAPITAL MANAGEMENT LLC History Closed out 0 0 0.02% -300,000 -100.0% Q3 2025 Nov 14, 2025
GSA CAPITAL PARTNERS LLP History Closed out 0 0 0.04% -262,371 -100.0% Q3 2025 Nov 07, 2025
Graham Capital Management, L.P. History Closed out 0 0 0.0% -167,172 -100.0% Q3 2025 Nov 14, 2025
HRT FINANCIAL LP History Closed out 0 0 0.0% -70,215 -100.0% Q3 2025 Nov 14, 2025
Cerity Partners LLC History Closed out 0 0 0.0% -29,562 -100.0% Q3 2025 Oct 22, 2025
Corient Private Wealth LLC History Closed out 0 0 0.0% -27,289 -100.0% Q3 2025 Nov 14, 2025
Pinnacle Wealth Planning Services, Inc. History Closed out 0 0 0.0% -24,636 -100.0% Q3 2025 Nov 13, 2025
Quadrature Capital Ltd History Closed out 0 0 0.0% -17,446 -100.0% Q3 2025 Nov 13, 2025
Dynamic Technology Lab Private Ltd History Closed out 0 0 0.0% -13,435 -100.0% Q3 2025 Nov 13, 2025
PRUDENTIAL FINANCIAL INC History Closed out 0 0 0.0% -12,543 -100.0% Q3 2025 Nov 13, 2025
Bay Colony Advisory Group, Inc d/b/a Bay Colony Advisors History Closed out 0 0 0.0% -10,000 -100.0% Q3 2025 Oct 24, 2025
NISA INVESTMENT ADVISORS, LLC History Reduced 490 0 0.0% -4,623 -90.42% Q4 2025 Jan 15, 2026
SIMPLEX TRADING, LLC History Reduced 430 0 0.0% -2,904 -87.1% Q4 2025 Feb 11, 2026
Fortitude Family Office, LLC History Closed out 0 0 0.0% -2,112 -100.0% Q3 2025 Oct 17, 2025
Rockefeller Capital Management L.P. History Closed out 0 0 0.0% -980 -100.0% Q3 2025 Nov 14, 2025
Parkside Financial Bank & Trust History Closed out 0 0 -344 -100.0% Q3 2025 Oct 30, 2025
Comprehensive Financial Planning, Inc./PA History New 323 0 +323 New Q4 2025 Feb 11, 2026
PNC FINANCIAL SERVICES GROUP, INC. History Closed out 0 0 -318 -100.0% Q3 2025 Nov 07, 2025
Arax Advisory Partners History Reduced 24 0 -261 -91.58% Q4 2025 Feb 13, 2026
Covestor Ltd History Reduced 19 0 -112 -85.5% Q4 2025 Feb 06, 2026
WOLVERINE ASSET MANAGEMENT LLC History Closed out 0 0 -58 -100.0% Q3 2025 Oct 28, 2025
Transamerica Financial Advisors, LLC History Closed out 0 0 -48 -100.0% Q3 2025 Nov 14, 2025
GAMMA Investing LLC History Added to 474 0 +30 6.76% Q4 2025 Jan 05, 2026
NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO History New 29 0 +29 New Q4 2025 Feb 10, 2026
UMB Bank, n.a. History Closed out 0 0 -29 -100.0% Q3 2025 Nov 04, 2025
MATHER GROUP, LLC. History Closed out 0 0 -21 -100.0% Q3 2025 Oct 21, 2025
American Capital Advisory, LLC History New 19 0 +19 New Q4 2025 Jan 30, 2026
Garton & Associates Financial Advisors LLC History New 18 0 +18 New Q4 2025 Feb 18, 2026
True Wealth Design, LLC History New 6 0 +6 New Q4 2025 Jan 08, 2026
IFP Advisors, Inc History Closed out 0 0 -4 -100.0% Q3 2025 Feb 06, 2026
ROTHSCHILD INVESTMENT LLC History New 3 0 +3 New Q4 2025 Feb 10, 2026
SBI Securities Co., Ltd. History Reduced 24 0 -1 -4.0% Q4 2025 Feb 03, 2026
Caitong International Asset Management Co., Ltd History Added to 2 0 +1 100.0% Q4 2025 Mar 03, 2026
CENTRAL TRUST Co History No change 171 0 0 0.0% Q4 2025 Feb 02, 2026
ST GERMAIN D J CO INC History No change 367 0 0 0.0% Q4 2025 Jan 29, 2026
COMERICA BANK History No change 127 0 0 0.0% Q4 2025 Jan 29, 2026
FARMERS & MERCHANTS INVESTMENTS INC History No change 53 0 0 0.0% Q4 2025 Feb 03, 2026
CIBC Private Wealth Group LLC History No change 294 0 0 0.0% Q4 2025 Feb 12, 2026
SIGNATUREFD, LLC History No change 361 0 0 0.0% Q4 2025 Jan 20, 2026
NewEdge Advisors, LLC History No change 189 0 0 0.0% Q4 2025 Feb 18, 2026
Dynamic Wealth Strategies, LLC History No change 411 0 0 0.0% Q4 2025 Feb 04, 2026
Scarborough Advisors, LLC History No change 161 0 0 0.0% Q4 2025 Feb 17, 2026
Farther Finance Advisors, LLC History No change 1 0 0 0.0% Q4 2025 Jan 23, 2026