OMNIAB INC (OABI)
Institutional ownership reported to the SEC as of Q2 2026, across 16 quarters.
129
Reporting holders
$146.5M
Reported value
41.0%
Of shares outstanding
0.1%
Held as options
+3
Holder change
Institutions report 59,682,566 shares against 145,390,398 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| Whitefort Capital Management, LP | $25.2M | 10,248,658 | 6.21% | 6q | -27.9%-$9.8M |
| BlackRock, Inc. | $21.9M | 8,897,490 | 0.00% | 8q | +9.8%+$1.9M |
| NOMURA HOLDINGS INC | $12.4M | 5,028,160 | 0.01% | 3q | +613.2%+$10.6M |
| CADIAN CAPITAL MANAGEMENT, LP | $10.4M | 4,211,821 | 0.78% | 4q | +1.3%+$134.5K |
| VANGUARD CAPITAL MANAGEMENT LLC | $9.5M | 3,852,356 | 0.00% | 2q | -3.5%-$347.6K |
| GEODE CAPITAL MANAGEMENT, LLC | $7.1M | 2,883,978 | 0.00% | 15q | -1.4%-$102.4K |
| RICE HALL JAMES & ASSOCIATES, LLC | $6.4M | 2,610,434 | 0.31% | 15q | +2.5%+$155.4K |
| PRIVATE MANAGEMENT GROUP INC | $5.8M | 2,344,770 | 0.15% | 14q | -3.5%-$207.6K |
| STATE STREET CORP | $5.2M | 2,133,549 | 0.00% | 15q | +3.2%+$163.4K |
| DIMENSIONAL FUND ADVISORS LP | $3.1M | 1,262,099 | 0.00% | 15q | -27.7%-$1.2M |
| TOWERVIEW LLC | $2.9M | 1,180,000 | 1.90% | 13q | +18.0%+$442.8K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $2.4M | 980,416 | 0.00% | 2q | +8.5%+$188.5K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $2.4M | 966,877 | 0.00% | 15q | +0.8%+$18.0K |
| Sixth Street Partners Management Company, L.P. | $2.4M | 966,877 | 0.00% | new | NEW |
| NORTHERN TRUST CORP | $2.3M | 948,294 | 0.00% | 15q | +7.7%+$165.8K |
| ADAR1 Capital Management, LLC | $2.3M | 947,412 | 0.11% | 11q | +34.3%+$595.9K |
| ISTHMUS PARTNERS, LLC | $2.0M | 803,428 | 0.19% | 15q | +6.2%+$115.0K |
| VANGUARD FIDUCIARY TRUST CO | $1.9M | 758,460 | 0.00% | 2q | +4.5%+$80.8K |
| TWO SIGMA INVESTMENTS, LP | $1.6M | 657,432 | 0.00% | 5q | +28.2%+$355.9K |
| Nuveen, LLC | $1.6M | 642,811 | 0.00% | 6q | +3.0%+$46.6K |
| RENAISSANCE TECHNOLOGIES LLC | $1.5M | 600,350 | 0.00% | 6q | +122.7%+$813.6K |
| D. E. Shaw & Co., Inc. | $1.4M | 559,404 | 0.00% | 4q | +47.1%+$440.7K |
| MACKENZIE FINANCIAL CORP | $1.2M | 489,134 | 0.00% | new | NEW |
| Arbiter Partners Capital Management LLC | $947.5K | 385,170 | 0.25% | 4q | +100.0%+$473.8K |
| GOLDMAN SACHS GROUP INC | $946.0K | 384,573 | 0.00% | 15q | -8.2%-$84.7K |
| MORGAN STANLEY | $913.9K | 371,506 | 0.00% | 15q | -8.9%-$89.6K |
| MILLENNIUM MANAGEMENT LLC | $864.3K | 474,159 | 0.00% | 15q | -9.5%-$90.7K |
| Bank of New York Mellon Corp | $783.3K | 318,406 | 0.00% | 15q | +16.0%+$108.1K |
| TLS Advisors LLC | $542.9K | 220,685 | 1.60% | 15q | -11.8%-$72.6K |
| FMR LLC | $491.6K | 199,818 | 0.00% | 15q | +5.4%+$25.3K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | $489.3K | 198,900 | 0.01% | 5q | HELD |
| RHUMBLINE ADVISERS | $423.0K | 171,957 | 0.00% | 15q | +8.0%+$31.3K |
| Palumbo Wealth Management LLC | $398.5K | 161,975 | 0.08% | new | NEW |
| Invesco Ltd. | $397.0K | 161,376 | 0.00% | 15q | +19.5%+$64.7K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $392.7K | 159,621 | 0.00% | new | NEW |
| AQR CAPITAL MANAGEMENT LLC | $388.0K | 157,716 | 0.00% | 6q | +36.4%+$103.5K |
| BANK OF AMERICA CORP /DE/ | $367.8K | 149,493 | 0.00% | 15q | +22.9%+$68.5K |
| Walleye Capital LLC | $355.3K | 144,427 | 0.00% | new | NEW |
| Cornerstone Capital, Inc. | $350.0K | 142,286 | 0.03% | 15q | HELD |
| JPMORGAN CHASE & CO | $275.1K | 107,049 | 0.00% | 15q | -10.9%-$33.5K |
| DEUTSCHE BANK AG\ | $248.1K | 100,842 | 0.00% | 15q | +8.8%+$20.1K |
| WELLS FARGO & COMPANY/MN | $246.6K | 100,229 | 0.00% | 15q | HELD |
| ALLIANCEBERNSTEIN L.P. | $244.9K | 155,992 | 0.00% | 15q | +3.6%+$8.5K |
| CITADEL ADVISORS LLC | $226.0K | 58,190 | 0.00% | 15q | -74.6%-$662.3K |
| AMERICAN CENTURY COMPANIES INC | $184.7K | 75,083 | 0.00% | 2q | +115.7%+$99.1K |
| XTX Topco Ltd | $181.8K | 73,907 | 0.00% | 3q | +65.5%+$71.9K |
| Connor, Clark & Lunn Investment Management Ltd. | $178.0K | 72,357 | 0.00% | 3q | +411.9%+$143.2K |
| MetLife Investment Management, LLC | $161.7K | 65,744 | 0.00% | 15q | +36.6%+$43.3K |
| Russell Investments Group, Ltd. | $156.9K | 63,783 | 0.00% | 9q | +490.6%+$130.3K |
| CITIGROUP INC | $134.5K | 54,667 | 0.00% | 15q | +460.6%+$110.5K |
| SEI INVESTMENTS CO | $131.3K | 53,390 | 0.00% | 15q | -11.9%-$17.7K |
| Shay Capital LLC | $126.7K | 51,500 | 0.01% | 2q | +3.7%+$4.5K |
| Vanguard Global Advisers, LLC | $126.4K | 51,396 | 0.00% | 2q | HELD |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $124.6K | 50,644 | 0.00% | 9q | +1.1%+$1.3K |
| BLAIR WILLIAM & CO/IL | $106.7K | 43,394 | 0.00% | 15q | HELD |
| Police & Firemen's Retirement System of New Jersey | $103.9K | 42,217 | 0.00% | 7q | +87.1%+$48.3K |
| PRUDENTIAL FINANCIAL INC | $95.9K | 38,969 | 0.00% | 2q | +102.1%+$48.4K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $87.8K | 35,691 | 0.00% | 14q | -14.3%-$14.6K |
| Squarepoint Ops LLC | $87.0K | 35,357 | 0.00% | 9q | +252.4%+$62.3K |
| LPL Financial LLC | $85.7K | 34,821 | 0.00% | 15q | -3.7%-$3.3K |
| WOODSTOCK CORP | $72.3K | 29,376 | 0.01% | 15q | -14.6%-$12.4K |
| INTECH INVESTMENT MANAGEMENT LLC | $68.4K | 27,824 | 0.00% | 8q | -3.8%-$2.7K |
| BARCLAYS PLC | $65.1K | 26,469 | 0.00% | 15q | -8.0%-$5.6K |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | $61.0K | 24,785 | 0.00% | 3q | -14.4%-$10.2K |
| MERCER GLOBAL ADVISORS INC /ADV | $60.8K | 24,714 | 0.00% | 2q | +146.0%+$36.1K |
| VOYA INVESTMENT MANAGEMENT LLC | $58.1K | 23,613 | 0.00% | 15q | +29.8%+$13.3K |
| China Universal Asset Management Co., Ltd. | $56.8K | 23,072 | 0.00% | 11q | -9.7%-$6.1K |
| HighTower Advisors, LLC | $53.2K | 21,609 | 0.00% | 15q | +2.6%+$1.3K |
| BFSG, LLC | $51.2K | 20,815 | 0.00% | 12q | HELD |
| Qube Research & Technologies Ltd | $49.7K | 20,186 | 0.00% | new | NEW |
| BNP PARIBAS FINANCIAL MARKETS | $48.8K | 19,822 | 0.00% | 7q | -27.5%-$18.5K |
| Quadrature Capital Ltd | $48.0K | 19,492 | 0.00% | new | NEW |
| ProShare Advisors LLC | $47.1K | 19,155 | 0.00% | 13q | -15.1%-$8.4K |
| Thrive Wealth Management, LLC | $44.4K | 18,046 | 0.01% | 13q | +4.4%+$1.9K |
| UBS Group AG | $43.9K | 17,849 | 0.00% | 15q | -82.6%-$208.3K |
| TWO SIGMA SECURITIES, LLC | $38.7K | 15,726 | 0.00% | new | NEW |
| OSAIC HOLDINGS, INC. | $38.0K | 15,459 | 0.00% | 15q | +181.1%+$24.5K |
| CANADA PENSION PLAN INVESTMENT BOARD | $37.1K | 15,100 | 0.00% | new | NEW |
| VICTORY CAPITAL MANAGEMENT INC | $33.6K | 13,649 | 0.00% | 15q | +1.2% |
| JANE STREET GROUP, LLC | $32.5K | options only | 0.00% | 11q | OPTIONS |
| CHOREO, LLC | $30.1K | 12,232 | 0.00% | 5q | HELD |
| NEW YORK STATE COMMON RETIREMENT FUND | $29.0K | 11,806 | 0.00% | 15q | HELD |
| Legal & General Group Plc | $27.8K | 11,284 | 0.00% | 15q | +21.4%+$4.9K |
| Legato Capital Management LLC | $26.8K | 10,913 | 0.00% | 15q | -61.3%-$42.5K |
| Vanguard Personalized Indexing Management, LLC | $26.6K | 10,793 | 0.00% | 5q | -57.2%-$35.5K |
| XPONANCE LLC | $25.8K | 10,472 | 0.00% | new | NEW |
| Ameritas Investment Partners, Inc. | $23.7K | 9,652 | 0.00% | 15q | HELD |
| Tower Research Capital LLC (TRC) | $19.8K | 8,044 | 0.00% | 15q | -77.2%-$67.1K |
| SUMMIT SECURITIES GROUP LLC | $19.4K | 7,882 | 0.00% | new | NEW |
| Steigerwald, Gordon & Koch Inc. | $18.9K | 7,673 | 0.00% | 4q | HELD |
| Mirae Asset Global Investments Co., Ltd. | $16.0K | 6,484 | 0.00% | 9q | -58.6%-$22.6K |
| Integrated Wealth Concepts LLC | $14.0K | 5,710 | 0.00% | 2q | -46.4%-$12.2K |
| SIMPLEX TRADING, LLC | $13.5K | options only | 0.00% | new | OPTIONS |
| ROYAL BANK OF CANADA | $13.0K | 5,219 | 0.00% | 15q | +209.4%+$8.8K |
| GF FUND MANAGEMENT CO. LTD. | $7.3K | 2,973 | 0.00% | 7q | -7.1% |
| Allworth Financial LP | $6.8K | 2,771 | 0.00% | 15q | +13.1% |
| Jackson, Grant Investment Advisers, Inc. | $6.0K | 2,450 | 0.00% | 15q | HELD |
| Sterling Capital Management LLC | $5.5K | 2,217 | 0.00% | 8q | -33.0%-$2.7K |
| Redwood Park Advisors LLC | $5.4K | 2,184 | 0.00% | 7q | HELD |
| SBI Securities Co., Ltd. | $5.1K | 2,059 | 0.00% | 7q | +8479.2%+$5.0K |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-14 | 13G/A | Whitefort Capital Management, LPwith 2 co-filers | 7.1% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 129 | $146.5M | 59,682,566 | 19 | 54 | 33 | 0.1% |
| Q1 2026 | 126 | $87.3M | 55,681,451 | 21 | 37 | 37 | 0.0% |
| Q4 2025 | 121 | $105.4M | 57,113,633 | 13 | 38 | 35 | 0.0% |
| Q3 2025 | 130 | $100.8M | 63,068,887 | 15 | 28 | 48 | 0.0% |
| Q2 2025 | 135 | $95.5M | 55,021,452 | 25 | 52 | 29 | 0.0% |
| Q1 2025 | 139 | $151.1M | 62,886,885 | 14 | 38 | 47 | 0.0% |
| Q4 2024 | 156 | $223.4M | 63,182,582 | 14 | 44 | 40 | 0.1% |
| Q3 2024 | 151 | $328.5M | 78,221,560 | 20 | 38 | 38 | 0.1% |
| Q2 2024 | 148 | $288.8M | 77,639,828 | 17 | 38 | 43 | 0.1% |
| Q1 2024 | 143 | $448.0M | 83,016,542 | 12 | 38 | 44 | 0.2% |
| Q4 2023 | 145 | $509.8M | 82,876,121 | 16 | 42 | 31 | 0.3% |
| Q3 2023 | 137 | $348.6M | 67,114,889 | 17 | 38 | 38 | 0.3% |
| Q2 2023 | 130 | $331.8M | 65,931,825 | 17 | 37 | 39 | 0.3% |
| Q1 2023 | 120 | $215.9M | 58,644,019 | 10 | 35 | 34 | 0.1% |
| Q4 2022 | 118 | $185.8M | 51,468,663 | 117 | 0 | 0 | 0.1% |
| Q3 2022 | 1 | $11.2M | 1,101,548 | 1 | 0 | 0 | 0.0% |