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, Q1 2025
Institutional positions in OmniAb, Inc. as of Mar 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
- 153
- −10 vs. Q4 2024
- Shares held
- 63.4M
- +42.7K (+0.1%) vs. Q4 2024
- Total value
- $152.0M
- −$71.9M (−32.1%) vs. Q4 2024
- New holders
- 16
- 43 more added
- Sold out
- 26
- 54 more reduced
2 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding OmniAb, Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Janus Henderson Group PLC | 8,058,228 | $19.5M | 0.01% | +97,907+1.2% | Added |
| BlackRock, Inc. | 7,058,742 | $16.9M | 0.00% | −120,278−1.7% | Reduced |
| Vanguard Group Inc | 5,179,306 | $12.4M | 0.00% | +123,996+2.5% | Added |
| Macquarie Group Ltd | 4,422,738 | $10.6M | 0.01% | +122,071+2.8% | Added |
| Whitefort Capital Management, LP | 3,914,896 | $9.40M | 4.42% | +3,914,896 | New |
| Dimensional Fund Advisors LP | 3,131,718 | $7.52M | 0.00% | +106,044+3.5% | Added |
| Rubric Capital Management LP | 2,850,588 | $6.84M | 0.12% | 00.0% | Unchanged |
| Chicago Capital, LLC | 2,620,454 | $6.29M | 0.18% | −354,997−11.9% | Reduced |
| Rice Hall James & Associates, LLC | 2,580,780 | $6.19M | 0.36% | −68,227−2.6% | Reduced |
| Private Management Group Inc | 2,529,759 | $6.07M | 0.22% | +296,711+13.3% | Added |
| Geode Capital Management, LLC | 2,461,050 | $5.91M | 0.00% | +107,608+4.6% | Added |
| State Street Corp | 1,921,283 | $4.61M | 0.00% | −153,527−7.4% | Reduced |
| Villere St Denis J & Co LLC | 1,437,944 | $3.45M | 0.33% | −28,126−1.9% | Reduced |
| Murchinson Ltd. | 1,007,810 | $2.42M | 0.42% | +7,810+0.8% | Added |
| Knott David M Jr | 982,336 | $2.36M | 1.11% | −112,169−10.2% | Reduced |
| Northern Trust Corp | 827,126 | $1.99M | 0.00% | −55,329−6.3% | Reduced |
| Royce & Associates LP | 817,080 | $1.96M | 0.02% | +110,000+15.6% | Added |
| Charles Schwab Investment Management Inc | 810,978 | $1.95M | 0.00% | −8,730−1.1% | Reduced |
| Impax Asset Management Group plc | 761,387 | $1.83M | 0.01% | 00.0% | Unchanged |
| Woodstock Corp | 742,700 | $1.78M | 0.18% | −59,878−7.5% | Reduced |
| JPMorgan Chase & Co | 618,437 | $1.48M | 0.00% | −383,360−38.3% | Reduced |
| Towerview LLC | 580,000 | $1.39M | 1.00% | +30,000+5.5% | Added |
| Bank of America Corp | 542,940 | $1.30M | 0.00% | −73,419−11.9% | Reduced |
| Morgan Stanley | 498,664 | $1.20M | 0.00% | +56,609+12.8% | Added |
| Isthmus Partners, LLC | 468,707 | $1.12M | 0.14% | +15,572+3.4% | Added |
| Deutsche Bank AG | 432,859 | $1.04M | 0.00% | −193,247−30.9% | Reduced |
| First Sabrepoint Capital Management LP | 410,000 | $984.0K | 0.41% | −1,050,602−71.9% | Reduced |
| Boothbay Fund Management, LLC | 377,929 | $907.0K | 0.03% | +2,929+0.8% | Added |
| Tang Capital Management LLC | 300,000 | $720.0K | 0.04% | 00.0% | Unchanged |
| UBS Group AG | 266,371 | $639.3K | 0.00% | −40,016−13.1% | Reduced |
| Bank of New York Mellon Corp | 258,142 | $619.5K | 0.00% | −1,029−0.4% | Reduced |
| TLS Advisors LLC | 250,185 | $600.0K | 1.35% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 243,669 | $584.8K | 0.00% | −304,866−55.6% | Reduced |
| Nuveen, LLC | 227,801 | $546.7K | 0.00% | +227,801 | New |
| Kent Lake PR LLC | 225,000 | $540.0K | 0.25% | −275,000−55.0% | Reduced |
| Citadel Advisors LLC | 194,024 | $465.7K | 0.00% | −243,946−55.7% | Reduced |
| American Century Companies Inc | 181,408 | $435.4K | 0.00% | +24,197+15.4% | Added |
| Cornerstone Capital, Inc. | 172,016 | $412.8K | 0.04% | 00.0% | Unchanged |
| Rhumbline Advisers | 151,565 | $363.7K | 0.00% | −2,247−1.5% | Reduced |
| FMR LLC | 131,526 | $315.7K | 0.00% | −24,084−15.5% | Reduced |
| ADAR1 Capital Management, LLC | 126,108 | $302.7K | 0.06% | −152,000−54.7% | Reduced |
| Gsa Capital Partners LLP | 125,452 | $301.0K | 0.03% | +78,553+167.5% | Added |
| Alliancebernstein L.P. | 119,392 | $286.5K | 0.00% | −1,323−1.1% | Reduced |
| Susquehanna International Group, LLP | 118,038 | $283.3K | 0.00% | +68,289+137.3% | Added |
| Northeast Financial Consultants Inc | 110,996 | $266.4K | 0.01% | 00.0% | Unchanged |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 108,111 | $259.5K | 0.00% | +108,111 | New |
| Barclays PLC | 105,613 | $253.5K | 0.00% | −58,702−35.7% | Reduced |
| Intech Investment Management LLC | 102,572 | $246.2K | 0.00% | +41,076+66.8% | Added |
| Mirabella Financial Services LLP | 100,381 | $240.9K | 0.01% | +100,381 | New |
| Invesco Ltd. | 93,701 | $224.9K | 0.00% | +48+0.1% | Added |
| Jane Street Group, LLC | 80,778 | $193.9K | 0.00% | +16,823+26.3% | Added |
| Citigroup Inc | 71,560 | $171.7K | 0.00% | −6,850−8.7% | Reduced |
| Wells Fargo & Company | 70,957 | $170.3K | 0.00% | +8,098+12.9% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 55,168 | $132.4K | 0.00% | +2,371+4.5% | Added |
| XTX Topco Ltd | 53,484 | $128.4K | 0.01% | +1,694+3.3% | Added |
| Connors Investor Services Inc | 49,611 | $119.1K | 0.01% | +20,000+67.5% | Added |
| Corebridge Financial, Inc. | 46,712 | $112.1K | 0.00% | +830+1.8% | Added |
| Blair William & Co | 45,171 | $108.4K | 0.00% | 00.0% | Unchanged |
| Gallagher Fiduciary Advisors, LLC | 43,696 | $104.9K | 0.00% | +6,944+18.9% | Added |
| Atria Investments LLC | 43,563 | $104.6K | 0.00% | +7,063+19.4% | Added |
| Price T Rowe Associates Inc | 39,317 | $95.0K | 0.00% | +1,100+2.9% | Added |
| Henshaw Capital LLC | 37,507 | $90.0K | 0.00% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 37,185 | $89.2K | 0.00% | +312+0.8% | Added |
| MetLife Investment Management | 36,627 | $87.9K | 0.00% | −11,798−24.4% | Reduced |
| HRT Financial LP | 34,647 | $83.0K | 0.00% | +10,215+41.8% | Added |
| SG Americas Securities, LLC | 31,553 | $76.0K | 0.00% | −9,056−22.3% | Reduced |
| Ameriprise Financial Inc | 29,310 | $70.3K | 0.00% | −9,079−23.7% | Reduced |
| Legato Capital Management LLC | 28,719 | $68.9K | 0.01% | −1,565−5.2% | Reduced |
| Voya Investment Management LLC | 27,763 | $66.6K | 0.00% | −3,493−11.2% | Reduced |
| State Board of Administration of Florida Retirement System | 26,753 | $64.2K | 0.00% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 26,600 | $63.8K | 0.00% | +26,600 | New |
| ProShare Advisors LLC | 26,100 | $62.6K | 0.00% | −5,624−17.7% | Reduced |
| Mesirow Financial Investment Management, Inc. | 30,764 | $59.4K | 0.00% | 00.0% | Unchanged |
| NJ State Employees Deferred Compensation Plan | 24,500 | $58.8K | 0.01% | 00.0% | Unchanged |
| China Universal Asset Management Co., Ltd. | 24,273 | $58.3K | 0.01% | −1,386−5.4% | Reduced |
| BFSG, LLC | 22,200 | $53.3K | 0.01% | +1,720+8.4% | Added |
| HighTower Advisors, LLC | 21,882 | $52.5K | 0.00% | +1,065+5.1% | Added |
| CIBC World Markets Corp | 21,157 | $50.8K | 0.00% | +21,157 | New |
| SEI Investments Co | 20,402 | $49.0K | 0.00% | −23,084−53.1% | Reduced |
| Sherbrooke Park Advisers LLC | 20,388 | $48.9K | 0.02% | +3,162+18.4% | Added |
| LPL Financial LLC | 20,019 | $48.0K | 0.00% | +461+2.4% | Added |
| Court Place Advisors, LLC | 20,004 | $48.0K | 0.02% | −3,552−15.1% | Reduced |
| BBR Partners, LLC | 20,000 | $48.0K | 0.00% | 00.0% | Unchanged |
| Police & Firemen's Retirement System of New Jersey | 18,614 | $44.7K | 0.00% | 00.0% | Unchanged |
| Captrust Financial Advisors | 16,837 | $40.4K | 0.00% | +242+1.5% | Added |
| CWC Advisors, LLC. | 16,801 | $40.3K | 0.02% | +4,055+31.8% | Added |
| Atom Investors LP | 16,367 | $39.3K | 0.00% | −53−0.3% | Reduced |
| The PNC Financial Services Group, Inc. | 16,276 | $39.1K | 0.00% | +11,986+279.4% | Added |
| Thrive Wealth Management, LLC | 16,081 | $38.6K | 0.01% | 00.0% | Unchanged |
| Squarepoint Ops LLC | 14,839 | $35.6K | 0.00% | −24,425−62.2% | Reduced |
| PDT Partners, LLC | 14,709 | $35.3K | 0.00% | −41,538−73.8% | Reduced |
| Public Employees Retirement Association of Colorado | 14,264 | $34.0K | 0.00% | 00.0% | Unchanged |
| ExodusPoint Capital Management, LP | 14,315 | $34.0K | 0.00% | +14,315 | New |
| Victory Capital Management Inc | 11,814 | $28.4K | 0.00% | −299−2.5% | Reduced |
| New York State Common Retirement Fund | 11,806 | $28.3K | 0.00% | 00.0% | Unchanged |
| HSBC Holdings PLC | 11,020 | $26.3K | 0.00% | +285+2.7% | Added |
| Cerity Partners LLC | 10,693 | $25.7K | 0.00% | +10,693 | New |
| AQR Capital Management LLC | 10,271 | $24.7K | 0.00% | +10,271 | New |
| Bay Colony Advisory Group, Inc d/b/a Bay Colony Advisors | 10,000 | $24.2K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 9,958 | $23.9K | 0.00% | −7,591−43.3% | Reduced |