OmniAb, Inc.
OABI- Exchange
- Nasdaq
- Industry
- Services-Commercial Physical & Biological Research
- SEC CIK
- 0001846253
No open-market purchases or sales by OmniAb, Inc. insiders were filed in the last 90 days; 131 institutions reported holding it in 13F filings for Q2 2026, worth $144.2M in total; no superinvestor holds it.
Other share classesOABIW
13F holders, Q4 2025
Institutional positions in OmniAb, Inc. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 129
- −7 vs. Q3 2025
- Shares held
- 57.3M
- −5.15M (−8.2%) vs. Q3 2025
- Total value
- $105.8M
- +$6.08M (+6.1%) vs. Q3 2025
- New holders
- 14
- 41 more added
- Sold out
- 21
- 39 more reduced
4 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting OABI on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 131 | $144.2M |
| Q1 2026 | 128 | $87.7M |
| Q4 2025 | 129 | $105.8M |
| Q3 2025 | 140 | $100.5M |
| Q2 2025 | 144 | $95.5M |
| Q1 2025 | 153 | $152.0M |
| Q4 2024 | 165 | $224.7M |
| Q3 2024 | 165 | $334.6M |
| Q2 2024 | 160 | $293.9M |
| Q1 2024 | 153 | $450.4M |
| Q4 2023 | 157 | $514.0M |
| Q3 2023 | 148 | $355.9M |
| Q2 2023 | 144 | $338.6M |
| Q1 2023 | 142 | $243.3M |
| Q4 2022 | 148 | $234.9M |
| Q3 2022 | 1 | $11.2M |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding OmniAb, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Covestor Ltd | 19 | $0 | 0.00% | −112−85.5% | Reduced |
| Caitong International Asset Management Co., Ltd | 1 | $2 | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 1 | $2 | 0.00% | 00.0% | Unchanged |
| Rothschild Investment LLC | 3 | $6 | 0.00% | +3 | New |
| True Wealth Design, LLC | 6 | $12 | 0.00% | +6 | New |
| American Capital Advisory, LLC | 19 | $36 | 0.00% | +19 | New |
| SRS Capital Advisors, Inc. | 24 | $44 | 0.00% | −261−91.6% | Reduced |
| SBI Securities Co., Ltd. | 24 | $44 | 0.00% | −1−4.0% | Reduced |
| Northwestern Mutual Wealth Management Co | 29 | $54 | 0.00% | +29 | New |
| Farmers & Merchants Investments Inc | 53 | $98 | 0.00% | 00.0% | Unchanged |
| Comerica Bank | 127 | $235 | 0.00% | 00.0% | Unchanged |
| Scarborough Advisors, LLC | 161 | $298 | 0.00% | 00.0% | Unchanged |
| Central Trust Co | 171 | $317 | 0.00% | 00.0% | Unchanged |
| GWM Advisors LLC | 189 | $350 | 0.00% | 00.0% | Unchanged |
| CIBC Private Wealth Group, LLC | 294 | $544 | 0.00% | 00.0% | Unchanged |
| Comprehensive Financial Planning, Inc. | 323 | $597 | 0.00% | +323 | New |
| Signaturefd, LLC | 361 | $668 | 0.00% | 00.0% | Unchanged |
| St Germain D J Co Inc | 367 | $679 | 0.00% | 00.0% | Unchanged |
| Dynamic Wealth Strategies, LLC | 411 | $760 | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 430 | $795 | 0.00% | −2,904−87.1% | Reduced |
| Nisa Investment Advisors, LLC | 490 | $907 | 0.00% | −4,623−90.4% | Reduced |
| Daiwa Securities Group Inc. | 475 | $1.00K | 0.00% | 00.0% | Unchanged |
| North Star Investment Management Corp. | 550 | $1.02K | 0.00% | 00.0% | Unchanged |
| Cheviot Value Management, LLC | 980 | $1.81K | 0.00% | 00.0% | Unchanged |
| Spire Wealth Management | 1,200 | $2.22K | 0.00% | −5,310−81.6% | Reduced |
| Optiver Holding B.V. | 1,256 | $2.32K | 0.00% | 00.0% | Unchanged |
| Larson Financial Group LLC | 1,470 | $2.72K | 0.00% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 1,854 | $3.43K | 0.00% | +1,850+46,250.0% | Added |
| EverSource Wealth Advisors, LLC | 2,003 | $3.71K | 0.00% | +1,338+201.2% | Added |
| Allworth Financial LP | 2,127 | $3.94K | 0.00% | 00.0% | Unchanged |
| Redwood Park Advisors LLC | 2,184 | $4.04K | 0.00% | 00.0% | Unchanged |
| Jackson, Grant Investment Advisers, Inc. | 2,450 | $4.53K | 0.00% | 00.0% | Unchanged |
| Smartleaf Asset Management LLC | 2,458 | $4.57K | 0.00% | −931−27.5% | Reduced |
| CWM, LLC | 2,493 | $5.00K | 0.00% | −3,562−58.8% | Reduced |
| GF Fund Management Co. Ltd. | 2,828 | $5.23K | 0.00% | +241+9.3% | Added |
| Amalgamated Bank | 3,304 | $6.00K | 0.00% | +134+4.2% | Added |
| Royal Bank of Canada | 4,802 | $9.00K | 0.00% | −298,361−98.4% | Reduced |
| Sterling Capital Management LLC | 5,622 | $10.4K | 0.00% | +55+1.0% | Added |
| Tower Research Capital LLC (TRC) | 6,270 | $11.6K | 0.00% | −2,073−24.8% | Reduced |
| California State Teachers Retirement System | 6,476 | $12.0K | 0.00% | −216−3.2% | Reduced |
| MAI Capital Management | 6,736 | $12.5K | 0.00% | +6,736 | New |
| Citigroup Inc | 6,868 | $12.7K | 0.00% | −4,250−38.2% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 6,995 | $12.9K | 0.00% | +2,251+47.4% | Added |
| Steigerwald, Gordon & Koch Inc. | 7,673 | $14.2K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 9,557 | $17.7K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 9,652 | $17.9K | 0.00% | 00.0% | Unchanged |
| RSM US Wealth Management LLC | 10,451 | $19.4K | 0.00% | −1,929−15.6% | Reduced |
| Nelson, Van Denburg & Campbell Wealth Management Group, LLC | 10,704 | $19.8K | 0.00% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 10,939 | $20.2K | 0.00% | +1,353+14.1% | Added |
| New York State Common Retirement Fund | 11,806 | $21.8K | 0.00% | 00.0% | Unchanged |
| XTX Topco Ltd | 12,022 | $22.2K | 0.00% | +12,022 | New |
| State of Wyoming | 12,243 | $22.6K | 0.00% | +12,243 | New |
| Victory Capital Management Inc | 12,552 | $23.2K | 0.00% | +2,481+24.6% | Added |
| Public Employees Retirement System of Ohio | 15,321 | $28.3K | 0.00% | −81,040−84.1% | Reduced |
| Advisor Group Holdings, Inc. | 15,468 | $28.6K | 0.00% | +1,946+14.4% | Added |
| Susquehanna International Group, LLP | 15,958 | $29.5K | 0.00% | +1,033+6.9% | Added |
| Thrive Wealth Management, LLC | 17,281 | $32.0K | 0.00% | 00.0% | Unchanged |
| Connor, Clark & Lunn Investment Management Ltd. | 18,945 | $35.0K | 0.00% | +18,945 | New |
| LPL Financial LLC | 19,354 | $35.8K | 0.00% | +554+2.9% | Added |
| Voya Investment Management LLC | 19,496 | $36.1K | 0.00% | 00.0% | Unchanged |
| BBR Partners, LLC | 20,000 | $37.0K | 0.00% | 00.0% | Unchanged |
| Squarepoint Ops LLC | 20,326 | $37.6K | 0.00% | −15,105−42.6% | Reduced |
| BFSG, LLC | 20,435 | $37.8K | 0.00% | 00.0% | Unchanged |
| Algert Global LLC | 20,498 | $37.9K | 0.00% | +20,498 | New |
| HighTower Advisors, LLC | 21,382 | $39.6K | 0.00% | 00.0% | Unchanged |
| Police & Firemen's Retirement System of New Jersey | 22,568 | $41.8K | 0.00% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 23,141 | $43.0K | 0.00% | +11,369+96.6% | Added |
| China Universal Asset Management Co., Ltd. | 23,457 | $43.4K | 0.00% | +1,949+9.1% | Added |
| AQR Capital Management LLC | 24,153 | $44.7K | 0.00% | +1,066+4.6% | Added |
| Brevan Howard Capital Management LP | 24,415 | $45.2K | 0.00% | −27,855−53.3% | Reduced |
| ProShare Advisors LLC | 25,576 | $47.3K | 0.00% | +5,213+25.6% | Added |
| BNP Paribas Arbitrage, SA | 25,870 | $47.9K | 0.00% | +4,149+19.1% | Added |
| Manufacturers Life Insurance Company, The | 28,943 | $53.5K | 0.00% | +28,943 | New |
| Legato Capital Management LLC | 30,679 | $56.8K | 0.00% | +2,490+8.8% | Added |
| JustInvest LLC | 31,437 | $58.2K | 0.00% | −10,257−24.6% | Reduced |
| Ameriprise Financial Inc | 32,749 | $60.6K | 0.00% | −200,038−85.9% | Reduced |
| Woodstock Corp | 35,240 | $65.2K | 0.01% | −316,513−90.0% | Reduced |
| MetLife Investment Management | 36,552 | $67.6K | 0.00% | −20,108−35.5% | Reduced |
| Intech Investment Management LLC | 37,820 | $70.0K | 0.00% | −12,745−25.2% | Reduced |
| SEI Investments Co | 42,860 | $79.3K | 0.00% | −38,185−47.1% | Reduced |
| Blair William & Co | 43,211 | $79.9K | 0.00% | −1,960−4.3% | Reduced |
| Acadian Asset Management LLC | 47,625 | $88.0K | 0.00% | +47,625 | New |
| Boothbay Fund Management, LLC | 47,596 | $88.1K | 0.00% | +47,596 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 48,843 | $90.4K | 0.00% | +5,395+12.4% | Added |
| Price T Rowe Associates Inc | 53,190 | $100.0K | 0.00% | 00.0% | Unchanged |
| Connors Investor Services Inc | 61,941 | $114.6K | 0.01% | 00.0% | Unchanged |
| UBS Group AG | 67,974 | $125.8K | 0.00% | +28,310+71.4% | Added |
| TLS Advisors LLC | 70,000 | $137.0K | 0.36% | −180,185−72.0% | Reduced |
| Deutsche Bank AG | 77,225 | $142.9K | 0.00% | −772−1.0% | Reduced |
| Bank of America Corp | 83,088 | $153.7K | 0.00% | +35,058+73.0% | Added |
| Cornerstone Capital, Inc. | 109,211 | $202.0K | 0.02% | 00.0% | Unchanged |
| Wells Fargo & Company | 125,636 | $232.4K | 0.00% | +45,040+55.9% | Added |
| Jane Street Group, LLC | 135,378 | $250.4K | 0.00% | −53,704−28.4% | Reduced |
| Invesco Ltd. | 136,309 | $252.2K | 0.00% | +12,258+9.9% | Added |
| Alliancebernstein L.P. | 150,592 | $278.6K | 0.00% | 00.0% | Unchanged |
| Nomura Holdings Inc | 154,951 | $286.7K | 0.00% | +154,951 | New |
| Rhumbline Advisers | 162,773 | $301.1K | 0.00% | +1,837+1.1% | Added |
| Barclays PLC | 165,557 | $306.3K | 0.00% | +21,847+15.2% | Added |
| Arbiter Partners Capital Management LLC | 192,585 | $356.3K | 0.19% | +32,056+20.0% | Added |
| Two Sigma Advisers, LP | 197,530 | $365.4K | 0.00% | +71,500+56.7% | Added |