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, Q2 2025
Institutional positions in OmniAb, Inc. as of Jun 30, 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
- 144
- −9 vs. Q1 2025
- Shares held
- 55.0M
- −8.38M (−13.2%) vs. Q1 2025
- Total value
- $95.5M
- −$56.5M (−37.2%) vs. Q1 2025
- New holders
- 25
- 56 more added
- Sold out
- 34
- 31 more reduced
Compare with Q1 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, Q2 2025
Shares, value and share of portfolio for each institution holding OmniAb, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Whitefort Capital Management, LP | 10,240,146 | $17.8M | 6.89% | +6,325,250+161.6% | Added |
| BlackRock, Inc. | 7,001,179 | $12.2M | 0.00% | −57,563−0.8% | Reduced |
| Vanguard Group Inc | 5,268,315 | $9.17M | 0.00% | +89,009+1.7% | Added |
| Dimensional Fund Advisors LP | 2,913,764 | $5.07M | 0.00% | −217,954−7.0% | Reduced |
| Rice Hall James & Associates, LLC | 2,627,123 | $4.57M | 0.25% | +46,343+1.8% | Added |
| Private Management Group Inc | 2,558,045 | $4.45M | 0.14% | +28,286+1.1% | Added |
| Geode Capital Management, LLC | 2,439,424 | $4.25M | 0.00% | −21,626−0.9% | Reduced |
| Citadel Advisors LLC | 2,132,592 | $3.71M | 0.00% | +1,938,568+999.1% | Added |
| State Street Corp | 2,010,909 | $3.50M | 0.00% | +89,626+4.7% | Added |
| Kent Lake PR LLC | 1,750,000 | $3.04M | 1.34% | +1,525,000+677.8% | Added |
| Jacobs Levy Equity Management, Inc | 1,105,524 | $1.92M | 0.01% | +1,105,524 | New |
| Royce & Associates LP | 867,080 | $1.51M | 0.02% | +50,000+6.1% | Added |
| Northern Trust Corp | 836,869 | $1.46M | 0.00% | +9,743+1.2% | Added |
| Charles Schwab Investment Management Inc | 832,274 | $1.45M | 0.00% | +21,296+2.6% | Added |
| Towerview LLC | 831,100 | $1.45M | 1.03% | +251,100+43.3% | Added |
| JPMorgan Chase & Co | 793,734 | $1.38M | 0.00% | +175,297+28.3% | Added |
| Morgan Stanley | 767,621 | $1.34M | 0.00% | +268,957+53.9% | Added |
| Renaissance Technologies LLC | 707,550 | $1.23M | 0.00% | +680,950+2,560.0% | Added |
| Woodstock Corp | 621,684 | $1.08M | 0.10% | −121,016−16.3% | Reduced |
| Isthmus Partners, LLC | 568,043 | $988.4K | 0.12% | +99,336+21.2% | Added |
| Millennium Management LLC | 650,316 | $917.5K | 0.00% | +518,645+393.9% | Added |
| Murchinson Ltd. | 502,810 | $874.9K | 0.47% | −505,000−50.1% | Reduced |
| Nuveen, LLC | 487,261 | $847.8K | 0.00% | +259,460+113.9% | Added |
| Marshall Wace, LLP | 359,665 | $625.8K | 0.00% | +359,665 | New |
| Royal Bank of Canada | 341,995 | $596.0K | 0.00% | +334,739+4,613.3% | Added |
| ADAR1 Capital Management, LLC | 326,108 | $567.4K | 0.09% | +200,000+158.6% | Added |
| Goldman Sachs Group Inc | 306,046 | $532.5K | 0.00% | +62,377+25.6% | Added |
| Tang Capital Management LLC | 300,000 | $522.0K | 0.03% | 00.0% | Unchanged |
| Ameriprise Financial Inc | 279,789 | $486.8K | 0.00% | +250,479+854.6% | Added |
| Bank of New York Mellon Corp | 270,751 | $471.1K | 0.00% | +12,609+4.9% | Added |
| TLS Advisors LLC | 250,185 | $435.0K | 1.36% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 231,688 | $403.1K | 0.00% | +231,688 | New |
| Boothbay Fund Management, LLC | 188,554 | $328.1K | 0.01% | −189,375−50.1% | Reduced |
| Barclays PLC | 181,677 | $316.1K | 0.00% | +76,064+72.0% | Added |
| Deutsche Bank AG | 167,551 | $291.5K | 0.00% | −265,308−61.3% | Reduced |
| Cornerstone Capital, Inc. | 163,762 | $284.9K | 0.03% | −8,254−4.8% | Reduced |
| Rhumbline Advisers | 160,728 | $279.6K | 0.00% | +9,163+6.0% | Added |
| Jane Street Group, LLC | 153,736 | $267.5K | 0.00% | +72,958+90.3% | Added |
| Alliancebernstein L.P. | 150,592 | $262.0K | 0.00% | +31,200+26.1% | Added |
| UBS Group AG | 138,462 | $240.9K | 0.00% | −127,909−48.0% | Reduced |
| FMR LLC | 137,801 | $239.8K | 0.00% | +6,275+4.8% | Added |
| XTX Topco Ltd | 137,171 | $238.7K | 0.01% | +83,687+156.5% | Added |
| Susquehanna International Group, LLP | 121,544 | $211.5K | 0.00% | +3,506+3.0% | Added |
| Northeast Financial Consultants Inc | 110,996 | $193.1K | 0.01% | 00.0% | Unchanged |
| Invesco Ltd. | 109,613 | $190.7K | 0.00% | +15,912+17.0% | Added |
| Two Sigma Advisers, LP | 107,930 | $187.8K | 0.00% | +107,930 | New |
| Mirabella Financial Services LLP | 100,381 | $174.7K | 0.02% | 00.0% | Unchanged |
| Public Employees Retirement System of Ohio | 96,361 | $167.7K | 0.00% | +96,361 | New |
| Wells Fargo & Company | 73,641 | $128.1K | 0.00% | +2,684+3.8% | Added |
| Cubist Systematic Strategies, LLC | 72,145 | $125.5K | 0.00% | +72,145 | New |
| Bank of America Corp | 71,031 | $123.6K | 0.00% | −471,909−86.9% | Reduced |
| MetLife Investment Management | 63,735 | $110.9K | 0.00% | +27,108+74.0% | Added |
| Connors Investor Services Inc | 62,000 | $107.9K | 0.01% | +12,389+25.0% | Added |
| SEI Investments Co | 61,126 | $106.3K | 0.00% | +40,724+199.6% | Added |
| Intech Investment Management LLC | 58,224 | $101.3K | 0.00% | −44,348−43.2% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 55,628 | $96.8K | 0.00% | +460+0.8% | Added |
| Bridgeway Capital Management, LLC | 53,900 | $93.8K | 0.00% | +53,900 | New |
| Brevan Howard Capital Management LP | 53,779 | $93.6K | 0.00% | +53,779 | New |
| Price T Rowe Associates Inc | 47,616 | $84.0K | 0.00% | +8,299+21.1% | Added |
| Blair William & Co | 45,171 | $78.6K | 0.00% | 00.0% | Unchanged |
| JustInvest LLC | 45,165 | $78.6K | 0.00% | +45,165 | New |
| Manufacturers Life Insurance Company, The | 44,809 | $78.0K | 0.00% | +7,624+20.5% | Added |
| Point72 Asia (Singapore) Pte. Ltd. | 41,638 | $72.5K | 0.01% | +41,638 | New |
| Citigroup Inc | 39,919 | $69.5K | 0.00% | −31,641−44.2% | Reduced |
| Voya Investment Management LLC | 30,572 | $53.2K | 0.00% | +2,809+10.1% | Added |
| CI Private Wealth, LLC | 30,253 | $52.6K | 0.00% | +30,253 | New |
| Legato Capital Management LLC | 28,189 | $49.0K | 0.01% | −530−1.8% | Reduced |
| State Board of Administration of Florida Retirement System | 26,753 | $46.5K | 0.00% | 00.0% | Unchanged |
| Gsa Capital Partners LLP | 26,174 | $46.0K | 0.00% | −99,278−79.1% | Reduced |
| ProShare Advisors LLC | 25,138 | $43.7K | 0.00% | −962−3.7% | Reduced |
| China Universal Asset Management Co., Ltd. | 24,571 | $42.8K | 0.00% | +298+1.2% | Added |
| NJ State Employees Deferred Compensation Plan | 24,500 | $42.6K | 0.01% | 00.0% | Unchanged |
| BFSG, LLC | 23,235 | $40.4K | 0.00% | +1,035+4.7% | Added |
| AQR Capital Management LLC | 22,791 | $39.7K | 0.00% | +12,520+121.9% | Added |
| Cerity Partners LLC | 22,612 | $39.3K | 0.00% | +11,919+111.5% | Added |
| HighTower Advisors, LLC | 21,382 | $37.2K | 0.00% | −500−2.3% | Reduced |
| US Bancorp | 20,794 | $36.2K | 0.00% | +20,794 | New |
| BBR Partners, LLC | 20,000 | $34.8K | 0.00% | 00.0% | Unchanged |
| LPL Financial LLC | 19,691 | $34.3K | 0.00% | −328−1.6% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 18,614 | $32.4K | 0.00% | 00.0% | Unchanged |
| Thrive Wealth Management, LLC | 17,281 | $30.1K | 0.00% | +1,200+7.5% | Added |
| CWC Advisors, LLC. | 17,261 | $30.0K | 0.02% | +460+2.7% | Added |
| Squarepoint Ops LLC | 16,541 | $28.8K | 0.00% | +1,702+11.5% | Added |
| Tower Research Capital LLC (TRC) | 16,331 | $28.4K | 0.00% | +9,566+141.4% | Added |
| Court Place Advisors, LLC | 15,923 | $27.7K | 0.01% | −4,081−20.4% | Reduced |
| Advisor Group Holdings, Inc. | 14,247 | $25.3K | 0.00% | +9,716+214.4% | Added |
| SG Americas Securities, LLC | 14,120 | $25.0K | 0.00% | −17,433−55.2% | Reduced |
| Atom Investors LP | 12,854 | $22.4K | 0.00% | −3,513−21.5% | Reduced |
| Dynamic Technology Lab Private Ltd | 12,557 | $22.0K | 0.00% | +12,557 | New |
| Prudential Financial Inc | 12,543 | $21.8K | 0.00% | +12,543 | New |
| CIBC World Markets Corp | 12,359 | $21.5K | 0.00% | −8,798−41.6% | Reduced |
| Colony Group, LLC | 12,342 | $21.5K | 0.00% | +12,342 | New |
| Quadrature Capital Ltd | 12,258 | $21.3K | 0.00% | +12,258 | New |
| New York State Common Retirement Fund | 11,806 | $20.5K | 0.00% | 00.0% | Unchanged |
| RSM US Wealth Management LLC | 11,791 | $20.5K | 0.00% | +11,791 | New |
| Victory Capital Management Inc | 11,769 | $20.5K | 0.00% | −45−0.4% | Reduced |
| BNP Paribas Arbitrage, SA | 11,283 | $19.6K | 0.00% | +1,325+13.3% | Added |
| Nelson, Van Denburg & Campbell Wealth Management Group, LLC | 11,151 | $19.4K | 0.00% | +11,151 | New |
| Bay Colony Advisory Group, Inc d/b/a Bay Colony Advisors | 10,000 | $17.4K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 9,652 | $16.8K | 0.00% | 00.0% | Unchanged |