OABI · Company research
OmniAb, Inc. Common Stock (OABI): Ownership & Institutional Holders
Reported institutional positions. Filing dates and sources matter.
RESEARCH CONTEXT
Understand the numbers
Reported institutional positions. Filing dates and sources matter. Use period, currency, units and source fields when interpreting values.
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Ownership & Institutional Holders data
Database-backed records only
| holder name | cik | period end | shares held | market value | ownership percent | shares change | shares change percent | filing date | data source |
|---|---|---|---|---|---|---|---|---|---|
| Caitong International Asset Management Co., Ltd | 1963355 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 5 | 12 | — | — | — | Aug 5, 2026 | SEC_13F_DATASET |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 861177 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 127 | 312 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 884546 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 966877 | 2378517 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| RICE HALL JAMES & ASSOCIATES, LLC | 1230765 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2610434 | 6421668 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| RHUMBLINE ADVISERS | 1115418 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 171957 | 423003 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Redwood Park Advisors LLC | 2056274 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2184 | 5373 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| STATE STREET CORP | 93751 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2133549 | 5248531 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| ProShare Advisors LLC | 1357955 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 19155 | 47122 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| AMERICAN CENTURY COMPANIES INC | 748054 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 75083 | 184704 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Calamos Advisors LLC | 1316507 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 200000 | 16720 | — | — | — | Jul 31, 2026 | SEC_13F_DATASET |
| Vanguard Personalized Indexing Management, LLC | 1767306 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 10793 | 26551 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Jackson, Grant Investment Advisers, Inc. | 1650300 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2450 | 6027 | — | — | — | Jul 31, 2026 | SEC_13F_DATASET |
| Tower Research Capital LLC (TRC) | 1533421 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 8044 | 19788 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| SEI INVESTMENTS CO | 350894 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 51563 | 126850 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| CITIGROUP INC | 831001 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 47847 | 117704 | — | — | — | Aug 3, 2026 | SEC_13F_DATASET |
| Bank of New York Mellon Corp | 1390777 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 175663 | 432131 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| ACADIAN ASSET MANAGEMENT LLC | 916542 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 132385 | 323 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| XTX Topco Ltd | 1828301 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 73907 | 181811 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Legal & General Group Plc | 764068 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 11284 | 27759 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Connor, Clark & Lunn Investment Management Ltd. | 1596800 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 65286 | 160604 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| BANK OF AMERICA CORP /DE/ | 70858 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 149493 | 367753 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| State of Wyoming | 1821626 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 137 | 0 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| Qube Research & Technologies Ltd | 1729829 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 20186 | 49658 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| BARCLAYS PLC | 312069 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 24264 | 59690 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 1107261 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 198900 | 489294 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| DIMENSIONAL FUND ADVISORS LP | 354204 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1132211 | 2785239 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| VOYA INVESTMENT MANAGEMENT LLC | 1068837 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 23613 | 58088 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| JPL Wealth Management, LLC | 2010710 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 7 | 18 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| MetLife Investment Management, LLC | 1529735 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 65744 | 161730 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| NOMURA HOLDINGS INC | 1163653 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 5028160 | 12369274 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| XPONANCE LLC | 1637541 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 10472 | 25761 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| RENAISSANCE TECHNOLOGIES LLC | 1037389 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 600350 | 1476861 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Comprehensive Financial Planning, Inc./PA | 2044855 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 323 | 795 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| Vanguard Global Advisers, LLC | 1811242 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 51396 | 126434 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 3852356 | 9476796 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| C M BIDWELL & ASSOCIATES LTD | 1091860 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 233 | 573 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| HighTower Advisors, LLC | 1462245 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 21609 | 53158 | — | — | — | Aug 5, 2026 | SEC_13F_DATASET |
| NEW YORK STATE COMMON RETIREMENT FUND | 810265 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 11806 | 29043 | — | — | — | Jul 29, 2026 | SEC_13F_DATASET |
| Arbiter Partners Capital Management LLC | 1513193 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 192585 | 473759 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| Clearstead Advisors, LLC | 842775 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 29 | 72 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| SIGNATUREFD, LLC | 1456048 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 361 | 888 | — | — | — | Jul 24, 2026 | SEC_13F_DATASET |
| LPL Financial LLC | 1403438 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 34821 | 85660 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| Nuveen, LLC | 1871926 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 437156 | 1075404 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| TWO SIGMA SECURITIES, LLC | 1450144 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 15726 | 38686 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| IFP Advisors, Inc | 1641866 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 87 | 214 | — | — | — | Jul 20, 2026 | SEC_13F_DATASET |
| TWO SIGMA INVESTMENTS, LP | 1179392 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 657432 | 1617283 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Sculptor Capital LP | 1054587 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 293802 | 23137 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| ROTHSCHILD INVESTMENT LLC | 85338 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 154 | 379000 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| Squarepoint Ops LLC | 1642575 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 35357 | 86978 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| IFG Advisory, LLC | 1728319 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 190 | 468 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| VICTORY CAPITAL MANAGEMENT INC | 1040188 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 13649 | 33577 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| Sterling Capital Management LLC | 1329883 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2217 | 5454 | — | — | — | Jul 28, 2026 | SEC_13F_DATASET |
| Quadrature Capital Ltd | 1651424 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 19492 | 47950 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| MATHER GROUP, LLC. | 1527641 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 21 | 52 | — | — | — | Jul 27, 2026 | SEC_13F_DATASET |
| Thrivent Financial for Lutherans | 314984 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 33865 | 83 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Anson Funds Management LP | 1491072 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 11833 | 29109 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 980416 | 2411823 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| FIFTH THIRD BANCORP | 35527 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 127 | 312 | — | — | — | Aug 5, 2026 | SEC_13F_DATASET |
| Optiver Holding B.V. | 1859606 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 848 | 2086 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| PRUDENTIAL FINANCIAL INC | 1137774 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 38969 | 95864 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Thrive Wealth Management, LLC | 1847610 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 18046 | 44393 | — | — | — | Jul 7, 2026 | SEC_13F_DATASET |
| Cheviot Value Management, LLC | 1427147 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 980 | 2411000 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| Ameritas Investment Partners, Inc. | 1055980 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 9652 | 23744 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| China Universal Asset Management Co., Ltd. | 1906594 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 23072 | 56757 | — | — | — | Jul 24, 2026 | SEC_13F_DATASET |
| JPMORGAN CHASE & CO | 19617 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 47602 | 122337 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Hudson Bay Capital Management LP | 1393825 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 465229 | 41266 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| SUMMIT SECURITIES GROUP LLC | 1531593 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 7882 | 19390 | — | — | — | Aug 3, 2026 | SEC_13F_DATASET |
| SIMPLEX TRADING, LLC | 1488542 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 5500 | 13530 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| BNP PARIBAS FINANCIAL MARKETS | 1166588 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 19822 | 48762 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Parallel Advisors, LLC | 1690010 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1854 | 4561000 | — | — | — | Aug 5, 2026 | SEC_13F_DATASET |
| GOLDMAN SACHS GROUP INC | 886982 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 261651 | 643661 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| NORTHERN TRUST CORP | 73124 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 5544 | 13638 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| TD PRIVATE CLIENT WEALTH LLC | 1551017 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 170 | 418000 | — | — | — | Aug 4, 2026 | SEC_13F_DATASET |
| TOWERVIEW LLC | 1166573 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1180000 | 2902800000 | — | — | — | Aug 4, 2026 | SEC_13F_DATASET |
| UBS Group AG | 1610520 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 14154 | 34819 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| LMR Partners LLP | 1578621 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 897392 | 79599 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| BlackRock, Inc. | 2012383 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 5181299 | 12745996 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| GEODE CAPITAL MANAGEMENT, LLC | 1214717 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2450903 | 6031017 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Quarry LP | 1965207 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 317 | 780 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Police & Firemen's Retirement System of New Jersey | 2040686 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 42217 | 103854 | — | — | — | Jul 23, 2026 | SEC_13F_DATASET |
Informational research only, not financial advice. Forecasts are uncertain and can be wrong.