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 2023
Institutional positions in OmniAb, Inc. as of Dec 31, 2023. 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
- 157
- +10 vs. Q3 2023
- Shares held
- 83.8M
- +15.1M (+22.0%) vs. Q3 2023
- Total value
- $514.0M
- +$158.2M (+44.5%) vs. Q3 2023
- New holders
- 26
- 44 more added
- Sold out
- 16
- 42 more reduced
1 institution that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2023: 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 2023
Shares, value and share of portfolio for each institution holding OmniAb, Inc.; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Avista Capital Holdings, L.P. | 15,817,934 | $95.4M | 89.09% | +15,817,934 | New |
| Janus Henderson Group PLC | 7,777,897 | $48.0M | 0.03% | +96,622+1.3% | Added |
| BlackRock Inc. | 7,287,819 | $45.0M | 0.00% | +521,034+7.7% | Added |
| Vanguard Group Inc | 5,651,408 | $34.9M | 0.00% | +155,464+2.8% | Added |
| Macquarie Group Ltd | 3,568,230 | $22.0M | 0.03% | −331,084−8.5% | Reduced |
| William Blair Investment Management, LLC | 3,337,241 | $20.6M | 0.06% | +474,585+16.6% | Added |
| Chicago Capital, LLC | 3,194,473 | $19.7M | 0.71% | −1,1250.0% | Reduced |
| Rubric Capital Management LP | 2,850,588 | $17.6M | 0.66% | 00.0% | Unchanged |
| Rice Hall James & Associates, LLC | 2,712,644 | $16.7M | 0.97% | −68,182−2.5% | Reduced |
| Private Management Group Inc | 2,639,651 | $16.3M | 0.62% | −32,641−1.2% | Reduced |
| Dimensional Fund Advisors LP | 2,623,995 | $16.2M | 0.00% | +293,674+12.6% | Added |
| Millennium Management LLC | 2,276,418 | $13.3M | 0.01% | −1,522,828−40.1% | Reduced |
| Geode Capital Management, LLC | 2,151,555 | $13.3M | 0.00% | +74,457+3.6% | Added |
| Villere St Denis J & Co LLC | 2,151,769 | $13.3M | 1.09% | −74,566−3.3% | Reduced |
| State Street Corp | 2,009,408 | $12.4M | 0.00% | −61,541−3.0% | Reduced |
| First Sabrepoint Capital Management LP | 1,657,173 | $10.2M | 4.65% | +208,374+14.4% | Added |
| Orchard Capital Managment, LLC | 1,358,028 | $8.38M | 2.62% | +77,838+6.1% | Added |
| Kornitzer Capital Management Inc | 1,219,955 | $7.53M | 0.15% | −510,470−29.5% | Reduced |
| Knott David M Jr | 1,086,505 | $6.70M | 2.56% | 00.0% | Unchanged |
| Northern Trust Corp | 873,432 | $5.39M | 0.00% | −10,871−1.2% | Reduced |
| Impax Asset Management Group plc | 848,184 | $5.23M | 0.02% | −300,000−26.1% | Reduced |
| Charles Schwab Investment Management Inc | 751,496 | $4.64M | 0.00% | +9,734+1.3% | Added |
| Woodstock Corp | 743,002 | $4.58M | 0.53% | +57,212+8.3% | Added |
| Deutsche Bank AG | 579,891 | $3.58M | 0.00% | −1,078−0.2% | Reduced |
| ADAR1 Capital Management, LLC | 478,171 | $2.95M | 1.32% | +478,171 | New |
| Bank of New York Mellon Corp | 464,954 | $2.87M | 0.00% | +46,515+11.1% | Added |
| Fuller & Thaler Asset Management, Inc. | 463,425 | $2.86M | 0.01% | 00.0% | Unchanged |
| Morgan Stanley | 458,362 | $2.83M | 0.00% | +197,161+75.5% | Added |
| Bank of America Corp | 425,093 | $2.62M | 0.00% | −2,702−0.6% | Reduced |
| AWH Capital, L.P. | 422,401 | $2.61M | 2.62% | −133,099−24.0% | Reduced |
| Isthmus Partners, LLC | 310,774 | $1.92M | 0.25% | +48,138+18.3% | Added |
| Kent Lake Capital LLC | 300,000 | $1.85M | 0.71% | −96,154−24.3% | Reduced |
| TLS Advisors LLC | 250,185 | $1.54M | 5.12% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 248,112 | $1.53M | 0.00% | +42,325+20.6% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 244,619 | $1.51M | 0.01% | +15,164+6.6% | Added |
| Nuveen Asset Management, LLC | 227,860 | $1.41M | 0.00% | +1,807+0.8% | Added |
| JPMorgan Chase & Co | 222,294 | $1.37M | 0.00% | +71,284+47.2% | Added |
| Goldman Sachs Group Inc | 189,437 | $1.17M | 0.00% | +18,542+10.8% | Added |
| Towerview LLC | 175,000 | $1.08M | 0.66% | +65,000+59.1% | Added |
| Swiss National Bank | 171,703 | $1.06M | 0.00% | −18,900−9.9% | Reduced |
| Cornerstone Capital, Inc. | 166,016 | $1.02M | 0.11% | 00.0% | Unchanged |
| Royce & Associates LP | 160,148 | $988.1K | 0.01% | +114,485+250.7% | Added |
| Rhumbline Advisers | 158,520 | $978.1K | 0.00% | +7,956+5.3% | Added |
| Barclays PLC | 145,298 | $896.5K | 0.00% | +113,170+352.2% | Added |
| UBS Group AG | 122,664 | $756.8K | 0.00% | +51,036+71.3% | Added |
| FMR LLC | 114,929 | $709.1K | 0.00% | +69,586+153.5% | Added |
| Alliancebernstein L.P. | 113,685 | $701.4K | 0.00% | 00.0% | Unchanged |
| Court Place Advisors, LLC | 111,657 | $688.9K | 0.23% | 00.0% | Unchanged |
| Standard Life Aberdeen plc | 103,708 | $639.9K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 93,118 | $574.5K | 0.00% | −4,119−4.2% | Reduced |
| Allspring Global Investments Holdings, LLC | 88,452 | $545.7K | 0.00% | +88,452 | New |
| UBS Asset Management Americas Inc | 79,905 | $493.0K | 0.00% | +12,200+18.0% | Added |
| Credit Suisse AG | 79,359 | $489.6K | 0.00% | −99−0.1% | Reduced |
| Legal & General Group Plc | 74,582 | $460.2K | 0.00% | 00.0% | Unchanged |
| American Century Companies Inc | 70,920 | $437.6K | 0.00% | +647+0.9% | Added |
| Captrust Financial Advisors | 68,898 | $425.1K | 0.00% | −5,486−7.4% | Reduced |
| Invesco Ltd. | 59,920 | $369.7K | 0.00% | −453,596−88.3% | Reduced |
| CIBC Private Wealth Group, LLC | 59,584 | $367.6K | 0.00% | 00.0% | Unchanged |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 54,372 | $340.9K | 0.00% | −20,319−27.2% | Reduced |
| SG Americas Securities, LLC | 53,732 | $332.0K | 0.00% | +26,552+97.7% | Added |
| Mesirow Financial Investment Management, Inc. | 47,993 | $319.2K | 0.01% | 00.0% | Unchanged |
| MetLife Investment Management | 50,427 | $311.1K | 0.00% | 00.0% | Unchanged |
| Jump Financial, LLC | 49,732 | $306.8K | 0.01% | +30,386+157.1% | Added |
| STRS Ohio | 49,700 | $306.0K | 0.00% | 00.0% | Unchanged |
| Blair William & Co | 49,360 | $304.6K | 0.00% | −279−0.6% | Reduced |
| Two Sigma Investments, LP | 46,584 | $287.4K | 0.00% | +4,884+11.7% | Added |
| American International Group, Inc. | 46,348 | $286.0K | 0.00% | −187−0.4% | Reduced |
| Winton Group Ltd | 45,499 | $280.7K | 0.02% | +6,079+15.4% | Added |
| Susquehanna International Group, LLP | 44,703 | $275.8K | 0.00% | +44,703 | New |
| Atom Investors LP | 43,879 | $270.7K | 0.05% | −2,202−4.8% | Reduced |
| Ameriprise Financial Inc | 43,351 | $267.5K | 0.00% | −1,102−2.5% | Reduced |
| Franklin Resources Inc | 43,106 | $266.0K | 0.00% | +43,106 | New |
| Renaissance Technologies LLC | 40,959 | $253.0K | 0.00% | −39,000−48.8% | Reduced |
| Mariner, LLC | 40,782 | $251.6K | 0.00% | −25,910−38.9% | Reduced |
| Voya Investment Management LLC | 38,186 | $235.6K | 0.00% | 00.0% | Unchanged |
| Mirae Asset Global Investments Co., Ltd. | 37,903 | $233.9K | 0.00% | +2,902+8.3% | Added |
| Wells Fargo & Company | 34,802 | $214.7K | 0.00% | −5,495−13.6% | Reduced |
| Royal Bank of Canada | 34,076 | $211.0K | 0.00% | +13,772+67.8% | Added |
| Guggenheim Capital LLC | 33,767 | $208.3K | 0.00% | −120.0% | Reduced |
| New York State Common Retirement Fund | 32,735 | $202.0K | 0.00% | −164−0.5% | Reduced |
| Principal Financial Group Inc | 32,488 | $200.5K | 0.00% | −3,172−8.9% | Reduced |
| Legato Capital Management LLC | 30,200 | $186.3K | 0.02% | 00.0% | Unchanged |
| State Board of Administration of Florida Retirement System | 26,753 | $165.1K | 0.00% | 00.0% | Unchanged |
| BFSG, LLC | 26,615 | $164.2K | 0.02% | 00.0% | Unchanged |
| Henshaw Capital LLC | 25,045 | $154.5K | 0.01% | 00.0% | Unchanged |
| SEI Investments Co | 24,806 | $153.1K | 0.00% | +2,641+11.9% | Added |
| NJ State Employees Deferred Compensation Plan | 24,500 | $151.2K | 0.02% | 00.0% | Unchanged |
| Arizona State Retirement System | 24,356 | $150.3K | 0.00% | −330−1.3% | Reduced |
| Price T Rowe Associates Inc | 23,735 | $148.0K | 0.00% | +2,238+10.4% | Added |
| ProShare Advisors LLC | 22,862 | $141.1K | 0.00% | +10,751+88.8% | Added |
| HighTower Advisors, LLC | 21,382 | $132.0K | 0.00% | 00.0% | Unchanged |
| HRT Financial LP | 20,883 | $128.0K | 0.00% | +20,883 | New |
| Tower Research Capital LLC (TRC) | 20,596 | $127.1K | 0.00% | −7,455−26.6% | Reduced |
| BBR Partners, LLC | 20,000 | $123.4K | 0.01% | 00.0% | Unchanged |
| Eagle Asset Management Inc | 19,651 | $121.2K | 0.00% | 00.0% | Unchanged |
| Sawtooth Solutions, LLC | 18,929 | $116.8K | 0.00% | +1,253+7.1% | Added |
| Bleakley Financial Group, LLC | 18,929 | $116.8K | 0.00% | +1,253+7.1% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 18,772 | $115.8K | 0.00% | +6,755+56.2% | Added |
| LPL Financial LLC | 18,392 | $113.5K | 0.00% | −210−1.1% | Reduced |
| Jane Street Group, LLC | 17,294 | $106.7K | 0.00% | +17,294 | New |