OmniabOABI
13F holders, Q1 2026 (March 31)128holders −1
20new positions
21sold out
6famous investors
$1.57avg. 13F price*
At the end of Q1 2026, 128 institutions reported holding Omniab Inc. (OABI) in their 13F filings, down 1 from Q4 2025. 20 opened new positions and 21 sold out. The largest holders were Whitefort Capital Management, LP ($22.3M), BlackRock, Inc. ($12.7M) and Cadian Capital Management, LP ($6.5M). 6 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio).
- Company
- Omniab Inc.
- CUSIP
- 68218J103
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 20 | $305K |
| Exits | 21 | $1.1M |
All 13F filers, Q4 2025 → Q1 2026: 1,973,544 shares bought and 3,167,863 shares sold, net −1,194,319 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 128 holders
| Whitefort Capital Management, LP | 7.05% | No change | 14,223,658 | $22.3M |
| BlackRock, Inc. | 0.00% | Add +0.5% | 8,106,881 | $12.7M |
| Cadian Capital Management, LP | 0.79% | Reduce -6.3% | 4,157,129 | $6.5M |
| Vanguard Capital Management LLC | 0.00% | — | 3,993,652 | $6.3M |
| Geode Capital Management, LLC | 0.00% | Add +7.5% | 2,925,579 | $4.6M |
| Rice Hall James & Associates, LLC | 0.22% | Add +6.1% | 2,547,255 | $4.0M |
| Private Management Group Inc. | 0.11% | Add +0.4% | 2,429,166 | $3.8M |
| State Street Corp. | 0.00% | Add +0.9% | 2,067,143 | $3.2M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -18.9% | 1,745,248 | $2.7M |
| Towerview LLC | 1.01% | No change | 1,000,000 | $1.6M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -0.7% | 959,573 | $1.5M |
| Vanguard Portfolio Management LLC | 0.00% | — | 903,799 | $1.4M |
| Northern Trust Corp. | 0.00% | Add +6.3% | 880,895 | $1.4M |
| Isthmus Partners, LLC | 0.12% | Add +4.9% | 756,674 | $1.2M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 725,608 | $1.1M |
| ADAR1 Capital Management, LLC | 0.07% | Add +0.4% | 705,190 | $1.1M |
| Nomura Holdings Inc. | 0.01% | Add +355.0% | 705,048 | $1.1M |
| Nuveen, LLC | 0.00% | Reduce -28.7% | 623,876 | $979K |
| Two Sigma Investments, LP | 0.00% | Add +21.2% | 512,741 | $805K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -22.4% | 419,024 | $658K |
| Morgan Stanley | 0.00% | Add +4.7% | 407,933 | $640K |
| Millennium Management | 0.00% | Reduce -22.2% | 523,918 | $630K |
| D. E. Shaw & Co. | 0.00% | Reduce -0.8% | 380,254 | $597K |
| Bank of New York Mellon Corp | 0.00% | Add +2.2% | 274,451 | $431K |
| Renaissance Technologies | 0.00% | Add +11.1% | 269,600 | $423K |
| TLS Advisors LLC | 0.93% | Add +257.4% | 250,185 | $393K |
| Citadel Advisors | 0.00% | Reduce -19.8% | 228,684 | $359K |
| Bridgeway Capital Management, LLC | 0.01% | No change | 198,900 | $312K |
| Arbiter Partners Capital Management LLC | 0.21% | No change | 192,585 | $302K |
| FMR LLC | 0.00% | Reduce -4.8% | 189,536 | $298K |
| Alliancebernstein L.P. | 0.00% | No change | 150,592 | $279K |
| Stonepine Capital Management, LLC | 0.23% | Reduce -76.6% | 164,045 | $258K |
| Rhumbline Advisers | 0.00% | Reduce -2.2% | 159,235 | $250K |
| Cornerstone Capital, Inc. | 0.02% | Add +30.3% | 142,286 | $223K |
| Invesco Ltd. | 0.00% | Reduce -0.9% | 135,087 | $212K |
| Bank of America Corp. | 0.00% | Add +46.4% | 121,656 | $191K |
| JPMorgan Chase & Co. | 0.00% | Reduce -59.0% | 120,102 | $187K |
| AQR Capital Management | 0.00% | Add +378.8% | 115,647 | $182K |
| UBS Group AG | 0.00% | Add +50.8% | 102,507 | $161K |
| Deutsche Bank AG | 0.00% | Add +20.0% | 92,670 | $145K |
| T. Rowe Price Associates Inc. | 0.00% | Add +44.8% | 77,040 | $122K |
| Sei Investments Co. | 0.00% | Add +41.3% | 60,578 | $95K |
| Vanguard Global Advisers, LLC | 0.00% | — | 51,396 | $81K |
| Wells Fargo & Company | 0.00% | Reduce -60.1% | 50,133 | $79K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +2.6% | 50,113 | $79K |
| Shay Capital LLC | 0.01% | New | 49,662 | $78K |
| MetLife Investment Management, LLC | 0.00% | Add +31.7% | 48,132 | $76K |
| XTX Topco Ltd | 0.00% | Add +271.5% | 44,659 | $70K |
| Blair William & Co. | 0.00% | Add +0.0% | 43,216 | $68K |
| Jacobs Levy Equity Management, Inc. | 0.00% | Reduce -82.0% | 42,966 | $67K |
| Susquehanna International Group, LLP | 0.00% | Add +160.9% | 41,629 | $65K |
| LPL Financial LLC | 0.00% | Add +86.9% | 36,164 | $57K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +463.1% | 35,306 | $55K |
| American Century Companies Inc. | 0.00% | New | 34,816 | $55K |
| Woodstock Corp. | 0.00% | Reduce -2.3% | 34,418 | $54K |
| NINE MASTS CAPITAL Ltd | 0.01% | New | 29,062 | $46K |
| Manufacturers Life Insurance Company, The | 0.00% | No change | 28,943 | $45K |
| Intech Investment Management LLC | 0.00% | Reduce -23.5% | 28,937 | $45K |
| Barclays PLC | 0.00% | Reduce -82.6% | 28,760 | $45K |
| Legato Capital Management LLC | 0.00% | Reduce -8.1% | 28,196 | $44K |
| Jane Street Group, LLC | 0.00% | Reduce -79.7% | 27,551 | $43K |
| BNP Paribas Financial Markets | 0.00% | Add +5.7% | 27,339 | $43K |
| China Universal Asset Management Co., Ltd. | 0.00% | Add +8.9% | 25,546 | $40K |
| Vanguard Personalized Indexing Management, LLC | 0.00% | Reduce -19.8% | 25,227 | $40K |
| State of Wyoming | 0.00% | Add +101.7% | 24,694 | $39K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 22,568 | $35K |
| ProShare Advisors LLC | 0.00% | Reduce -11.8% | 22,552 | $35K |
| HighTower Advisors, LLC | 0.00% | Reduce -1.5% | 21,068 | $33K |
| Bfsg, LLC | 0.00% | Add +1.9% | 20,815 | $33K |
| Prudential Financial Inc. | 0.00% | New | 19,279 | $30K |
| Voya Investment Management LLC | 0.00% | Reduce -6.7% | 18,190 | $29K |
| Thrive Wealth Management, LLC | 0.00% | No change | 17,281 | $27K |
| Point72 Asset Management | 0.00% | New | 16,238 | $25K |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | Reduce -25.4% | 14,136 | $22K |
| Victory Capital Management Inc. | 0.00% | Add +7.5% | 13,488 | $21K |
| Choreo, LLC | 0.00% | Add +16.5% | 12,178 | $19K |
| New York State Common Retirement Fund | 0.00% | No change | 11,806 | $19K |
| Diversified Enterprises, LLC | 0.00% | New | 11,311 | $18K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -1.3% | 10,800 | $17K |
| Abel Hall, LLC | 0.00% | New | 10,704 | $17K |
| Integrated Wealth Concepts LLC | 0.00% | New | 10,651 | $17K |
| Mercer Global Advisors Inc. | 0.00% | New | 10,048 | $16K |
| Squarepoint Ops LLC | 0.00% | Reduce -50.6% | 10,032 | $16K |
| Citigroup Inc. | 0.00% | Add +42.0% | 9,752 | $15K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 9,652 | $15K |
| Legal & General Group Plc | 0.00% | Reduce -2.8% | 9,292 | $15K |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | Add +11.9% | 7,829 | $12K |
| Steigerwald, Gordon & Koch Inc. | 0.00% | No change | 7,673 | $12K |
| Cwm, LLC | 0.00% | Add +204.8% | 7,599 | $12K |
| California State Teachers Retirement System | 0.00% | Reduce -3.6% | 6,243 | $10K |
| Osaic Holdings, Inc. | 0.00% | Reduce -64.5% | 5,499 | $9K |
| MAI Capital Management | 0.00% | Reduce -28.4% | 4,821 | $8K |
| Sterling Capital Management LLC | 0.00% | Reduce -41.2% | 3,307 | $5K |
| GF Fund Management Co. LTD. | 0.00% | Add +13.2% | 3,201 | $5K |
| Allworth Financial LP | 0.00% | Add +15.2% | 2,451 | $4K |
| Jackson, Grant Investment Advisers, Inc. | 0.00% | No change | 2,450 | $4K |
| Redwood Park Advisors LLC | 0.00% | No change | 2,184 | $3K |
| Royal Bank of Canada | 0.00% | Reduce -63.5% | 1,751 | $3K |
| Parallel Advisors, LLC | 0.00% | No change | 1,854 | $3K |
| Larson Financial Group LLC | 0.00% | Reduce -1.8% | 1,444 | $2K |
"% of holder's portfolio" is OABI's weight in each manager's 13F, not the share of Omniab Inc. the manager owns.