OmniabOABI
13F holders, Q4 2025 (December 31)129holders −11
14new positions
20sold out
5famous investors
$1.85avg. 13F price*
At the end of Q4 2025, 129 institutions reported holding Omniab Inc. (OABI) in their 13F filings, down 11 from Q3 2025. 14 opened new positions and 20 sold out. The largest holders were Whitefort Capital Management, LP ($26.3M), BlackRock, Inc. ($14.9M) and Vanguard Group Inc. ($10.4M). 5 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies'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 Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 14 | $647K |
| Exits | 20 | $1.5M |
All 13F filers, Q3 2025 → Q4 2025: 4,598,908 shares bought and 9,721,872 shares sold, net −5,122,964 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 129 holders
| Whitefort Capital Management, LP | 8.28% | No change | 14,223,658 | $26.3M |
| BlackRock, Inc. | 0.00% | Add +15.8% | 8,064,981 | $14.9M |
| Vanguard Group Inc. | 0.00% | Add +9.3% | 5,625,197 | $10.4M |
| Cadian Capital Management, LP | 0.59% | Add +20.7% | 4,434,954 | $8.2M |
| Geode Capital Management, LLC | 0.00% | Add +17.0% | 2,722,692 | $5.0M |
| Private Management Group Inc. | 0.13% | Reduce -3.9% | 2,420,478 | $4.5M |
| Rice Hall James & Associates, LLC | 0.24% | Reduce -0.5% | 2,401,088 | $4.4M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -15.5% | 2,152,593 | $4.0M |
| State Street Corp. | 0.00% | Reduce -2.2% | 2,048,996 | $3.8M |
| Towerview LLC | 1.34% | Add +20.3% | 1,000,000 | $1.9M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +23.0% | 966,026 | $1.8M |
| Nuveen, LLC | 0.00% | Add +0.0% | 874,512 | $1.6M |
| Northern Trust Corp. | 0.00% | Add +1.3% | 829,021 | $1.5M |
| Isthmus Partners, LLC | 0.15% | Add +7.8% | 721,309 | $1.3M |
| ADAR1 Capital Management, LLC | 0.10% | Reduce -35.6% | 702,190 | $1.3M |
| Stonepine Capital Management, LLC | 1.03% | Reduce -67.3% | 701,000 | $1.3M |
| Millennium Management | 0.00% | Add +135.6% | 673,395 | $1.0M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -8.1% | 540,277 | $1000K |
| Two Sigma Investments, LP | 0.00% | Add +45.0% | 423,104 | $783K |
| Morgan Stanley | 0.00% | Reduce -52.5% | 389,687 | $721K |
| D. E. Shaw & Co. | 0.00% | Add +105.7% | 383,152 | $709K |
| JPMorgan Chase & Co. | 0.00% | Reduce -61.6% | 293,168 | $542K |
| Woodline Partners LP | 0.00% | Reduce -90.0% | 285,714 | $529K |
| Citadel Advisors | 0.00% | Reduce -65.9% | 285,134 | $527K |
| Bank of New York Mellon Corp | 0.00% | Add +1.9% | 268,645 | $497K |
| Renaissance Technologies | 0.00% | Reduce -53.6% | 242,700 | $449K |
| Jacobs Levy Equity Management, Inc. | 0.00% | Reduce -76.3% | 238,189 | $441K |
| FMR LLC | 0.00% | Add +28.8% | 198,980 | $368K |
| Bridgeway Capital Management, LLC | 0.01% | Add +29.2% | 198,900 | $368K |
| Two Sigma Advisers, LP | 0.00% | Add +56.7% | 197,530 | $365K |
| Arbiter Partners Capital Management LLC | 0.19% | Add +20.0% | 192,585 | $356K |
| Barclays PLC | 0.00% | Add +15.2% | 165,557 | $306K |
| Rhumbline Advisers | 0.00% | Add +1.1% | 162,773 | $301K |
| Nomura Holdings Inc. | 0.00% | New | 154,951 | $287K |
| Alliancebernstein L.P. | 0.00% | No change | 150,592 | $279K |
| Invesco Ltd. | 0.00% | Add +9.9% | 136,309 | $252K |
| Jane Street Group, LLC | 0.00% | Reduce -28.4% | 135,378 | $250K |
| Wells Fargo & Company | 0.00% | Add +55.9% | 125,636 | $232K |
| Cornerstone Capital, Inc. | 0.02% | No change | 109,211 | $202K |
| Bank of America Corp. | 0.00% | Add +73.0% | 83,088 | $154K |
| Deutsche Bank AG | 0.00% | Reduce -1.0% | 77,225 | $143K |
| TLS Advisors LLC | 0.44% | Reduce -72.0% | 70,000 | $137K |
| UBS Group AG | 0.00% | Add +71.4% | 67,974 | $126K |
| Connors Investor Services Inc. | 0.01% | No change | 61,941 | $115K |
| T. Rowe Price Associates Inc. | 0.00% | No change | 53,190 | $100K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +12.4% | 48,843 | $90K |
| Boothbay Fund Management, LLC | 0.00% | New | 47,596 | $88K |
| Acadian Asset Management LLC | 0.00% | New | 47,625 | $88K |
| Blair William & Co. | 0.00% | Reduce -4.3% | 43,211 | $80K |
| Sei Investments Co. | 0.00% | Reduce -47.1% | 42,860 | $79K |
| Intech Investment Management LLC | 0.00% | Reduce -25.2% | 37,820 | $70K |
| MetLife Investment Management, LLC | 0.00% | Reduce -35.5% | 36,552 | $68K |
| Woodstock Corp. | 0.01% | Reduce -90.0% | 35,240 | $65K |
| Ameriprise Financial Inc. | 0.00% | Reduce -85.9% | 32,749 | $61K |
| Vanguard Personalized Indexing Management, LLC | 0.00% | Reduce -24.6% | 31,437 | $58K |
| Legato Capital Management LLC | 0.00% | Add +8.8% | 30,679 | $57K |
| Manufacturers Life Insurance Company, The | 0.00% | New | 28,943 | $54K |
| BNP Paribas Financial Markets | 0.00% | Add +19.1% | 25,870 | $48K |
| ProShare Advisors LLC | 0.00% | Add +25.6% | 25,576 | $47K |
| Brevan Howard Capital Management LP | 0.00% | Reduce -53.3% | 24,415 | $45K |
| AQR Capital Management | 0.00% | Add +4.6% | 24,153 | $45K |
| China Universal Asset Management Co., Ltd. | 0.00% | Add +9.1% | 23,457 | $43K |
| SG Americas Securities, LLC | 0.00% | Add +96.6% | 23,141 | $43K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 22,568 | $42K |
| HighTower Advisors, LLC | 0.00% | No change | 21,382 | $40K |
| Algert Global LLC | 0.00% | New | 20,498 | $38K |
| Bfsg, LLC | 0.00% | No change | 20,435 | $38K |
| Squarepoint Ops LLC | 0.00% | Reduce -42.6% | 20,326 | $38K |
| BBR Partners, LLC | 0.00% | No change | 20,000 | $37K |
| Voya Investment Management LLC | 0.00% | No change | 19,496 | $36K |
| LPL Financial LLC | 0.00% | Add +3.0% | 19,354 | $36K |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | New | 18,945 | $35K |
| Thrive Wealth Management, LLC | 0.00% | No change | 17,281 | $32K |
| Susquehanna International Group, LLP | 0.00% | Add +6.9% | 15,958 | $30K |
| Osaic Holdings, Inc. | 0.00% | Add +14.4% | 15,468 | $29K |
| Public Employees Retirement System of Ohio | 0.00% | Reduce -84.1% | 15,321 | $28K |
| Victory Capital Management Inc. | 0.00% | Add +24.6% | 12,552 | $23K |
| State of Wyoming | 0.00% | New | 12,243 | $23K |
| XTX Topco Ltd | 0.00% | New | 12,022 | $22K |
| New York State Common Retirement Fund | 0.00% | No change | 11,806 | $22K |
| Russell Investments Group, Ltd. | 0.00% | Add +14.1% | 10,939 | $20K |
| Avior Wealth Management, LLC | 0.00% | No change | 10,704 | $20K |
| Choreo, LLC | 0.00% | Reduce -15.6% | 10,451 | $19K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 9,652 | $18K |
| Legal & General Group Plc | 0.00% | No change | 9,557 | $18K |
| Steigerwald, Gordon & Koch Inc. | 0.00% | No change | 7,673 | $14K |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | Add +47.5% | 6,995 | $13K |
| Citigroup Inc. | 0.00% | Reduce -38.2% | 6,868 | $13K |
| MAI Capital Management | 0.00% | New | 6,736 | $12K |
| California State Teachers Retirement System | 0.00% | Reduce -3.2% | 6,476 | $12K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -24.9% | 6,270 | $12K |
| Sterling Capital Management LLC | 0.00% | Add +1.0% | 5,622 | $10K |
| Royal Bank of Canada | 0.00% | Reduce -98.4% | 4,802 | $9K |
| Amalgamated Bank | 0.00% | Add +4.2% | 3,304 | $6K |
| GF Fund Management Co. LTD. | 0.00% | Add +9.3% | 2,828 | $5K |
| Cwm, LLC | 0.00% | Reduce -58.8% | 2,493 | $5K |
| Smartleaf Asset Management LLC | 0.00% | Reduce -27.5% | 2,458 | $5K |
| Jackson, Grant Investment Advisers, Inc. | 0.00% | No change | 2,450 | $5K |
| Redwood Park Advisors LLC | 0.00% | No change | 2,184 | $4K |
| Allworth Financial LP | 0.00% | No change | 2,127 | $4K |
"% of holder's portfolio" is OABI's weight in each manager's 13F, not the share of Omniab Inc. the manager owns.