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 |
|---|---|---|---|---|---|
| Northeast Financial Consultants Inc | 110,996 | $193.1K | 0.01% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 121,544 | $211.5K | 0.00% | +3,506+3.0% | Added |
| XTX Topco Ltd | 137,171 | $238.7K | 0.01% | +83,687+156.5% | Added |
| FMR LLC | 137,801 | $239.8K | 0.00% | +6,275+4.8% | Added |
| UBS Group AG | 138,462 | $240.9K | 0.00% | −127,909−48.0% | Reduced |
| Alliancebernstein L.P. | 150,592 | $262.0K | 0.00% | +31,200+26.1% | Added |
| Jane Street Group, LLC | 153,736 | $267.5K | 0.00% | +72,958+90.3% | Added |
| Rhumbline Advisers | 160,728 | $279.6K | 0.00% | +9,163+6.0% | Added |
| Cornerstone Capital, Inc. | 163,762 | $284.9K | 0.03% | −8,254−4.8% | Reduced |
| Deutsche Bank AG | 167,551 | $291.5K | 0.00% | −265,308−61.3% | Reduced |
| Barclays PLC | 181,677 | $316.1K | 0.00% | +76,064+72.0% | Added |
| Boothbay Fund Management, LLC | 188,554 | $328.1K | 0.01% | −189,375−50.1% | Reduced |
| Two Sigma Investments, LP | 231,688 | $403.1K | 0.00% | +231,688 | New |
| TLS Advisors LLC | 250,185 | $435.0K | 1.36% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 270,751 | $471.1K | 0.00% | +12,609+4.9% | Added |
| Ameriprise Financial Inc | 279,789 | $486.8K | 0.00% | +250,479+854.6% | Added |
| Tang Capital Management LLC | 300,000 | $522.0K | 0.03% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 306,046 | $532.5K | 0.00% | +62,377+25.6% | Added |
| ADAR1 Capital Management, LLC | 326,108 | $567.4K | 0.09% | +200,000+158.6% | Added |
| Royal Bank of Canada | 341,995 | $596.0K | 0.00% | +334,739+4,613.3% | Added |
| Marshall Wace, LLP | 359,665 | $625.8K | 0.00% | +359,665 | New |
| Nuveen, LLC | 487,261 | $847.8K | 0.00% | +259,460+113.9% | Added |
| Murchinson Ltd. | 502,810 | $874.9K | 0.47% | −505,000−50.1% | Reduced |
| Millennium Management LLC | 650,316 | $917.5K | 0.00% | +518,645+393.9% | Added |
| Isthmus Partners, LLC | 568,043 | $988.4K | 0.12% | +99,336+21.2% | Added |
| Woodstock Corp | 621,684 | $1.08M | 0.10% | −121,016−16.3% | Reduced |
| Renaissance Technologies LLC | 707,550 | $1.23M | 0.00% | +680,950+2,560.0% | Added |
| Morgan Stanley | 767,621 | $1.34M | 0.00% | +268,957+53.9% | Added |
| JPMorgan Chase & Co | 793,734 | $1.38M | 0.00% | +175,297+28.3% | Added |
| Towerview LLC | 831,100 | $1.45M | 1.03% | +251,100+43.3% | Added |
| Charles Schwab Investment Management Inc | 832,274 | $1.45M | 0.00% | +21,296+2.6% | Added |
| Northern Trust Corp | 836,869 | $1.46M | 0.00% | +9,743+1.2% | Added |
| Royce & Associates LP | 867,080 | $1.51M | 0.02% | +50,000+6.1% | Added |
| Jacobs Levy Equity Management, Inc | 1,105,524 | $1.92M | 0.01% | +1,105,524 | New |
| Kent Lake PR LLC | 1,750,000 | $3.04M | 1.34% | +1,525,000+677.8% | Added |
| State Street Corp | 2,010,909 | $3.50M | 0.00% | +89,626+4.7% | Added |
| Citadel Advisors LLC | 2,132,592 | $3.71M | 0.00% | +1,938,568+999.1% | Added |
| Geode Capital Management, LLC | 2,439,424 | $4.25M | 0.00% | −21,626−0.9% | Reduced |
| Private Management Group Inc | 2,558,045 | $4.45M | 0.14% | +28,286+1.1% | Added |
| Rice Hall James & Associates, LLC | 2,627,123 | $4.57M | 0.25% | +46,343+1.8% | Added |
| Dimensional Fund Advisors LP | 2,913,764 | $5.07M | 0.00% | −217,954−7.0% | Reduced |
| Vanguard Group Inc | 5,268,315 | $9.17M | 0.00% | +89,009+1.7% | Added |
| BlackRock, Inc. | 7,001,179 | $12.2M | 0.00% | −57,563−0.8% | Reduced |
| Whitefort Capital Management, LP | 10,240,146 | $17.8M | 6.89% | +6,325,250+161.6% | Added |
| Janus Henderson Group PLC | 0 | $0 | 0.00% | −8,058,228−100.0% | Sold out |
| Macquarie Group Ltd | 0 | $0 | 0.00% | −4,422,738−100.0% | Sold out |
| Rubric Capital Management LP | 0 | $0 | 0.00% | −2,850,588−100.0% | Sold out |
| Chicago Capital, LLC | 0 | $0 | 0.00% | −2,620,454−100.0% | Sold out |
| Villere St Denis J & Co LLC | 0 | $0 | 0.00% | −1,437,944−100.0% | Sold out |
| Knott David M Jr | 0 | $0 | 0.00% | −982,336−100.0% | Sold out |
| Impax Asset Management Group plc | 0 | $0 | 0.00% | −761,387−100.0% | Sold out |
| First Sabrepoint Capital Management LP | 0 | $0 | 0.00% | −410,000−100.0% | Sold out |
| American Century Companies Inc | 0 | $0 | 0.00% | −181,408−100.0% | Sold out |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0 | $0 | 0.00% | −108,111−100.0% | Sold out |
| Corebridge Financial, Inc. | 0 | $0 | 0.00% | −46,712−100.0% | Sold out |
| Gallagher Fiduciary Advisors, LLC | 0 | $0 | 0.00% | −43,696−100.0% | Sold out |
| Atria Investments LLC | 0 | $0 | 0.00% | −43,563−100.0% | Sold out |
| Henshaw Capital LLC | 0 | $0 | 0.00% | −37,507−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −34,647−100.0% | Sold out |
| Mesirow Financial Investment Management, Inc. | 0 | $0 | 0.00% | −30,764−100.0% | Sold out |
| Sherbrooke Park Advisers LLC | 0 | $0 | 0.00% | −20,388−100.0% | Sold out |
| Captrust Financial Advisors | 0 | $0 | 0.00% | −16,837−100.0% | Sold out |
| PDT Partners, LLC | 0 | $0 | 0.00% | −14,709−100.0% | Sold out |
| Public Employees Retirement Association of Colorado | 0 | $0 | 0.00% | −14,264−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −14,315−100.0% | Sold out |
| HSBC Holdings PLC | 0 | $0 | 0.00% | −11,020−100.0% | Sold out |
| Federated Hermes, Inc. | 0 | $0 | 0.00% | −4,157−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −3,693−100.0% | Sold out |
| Rise Advisors, LLC | 0 | $0 | 0.00% | −1,725−100.0% | Sold out |
| Northwestern Mutual Wealth Management Co | 0 | $0 | 0.00% | −1,141−100.0% | Sold out |
| Coldstream Capital Management Inc | 0 | $0 | 0.00% | −474−100.0% | Sold out |
| Cornerstone Planning Group LLC | 0 | $0 | 0.00% | −249−100.0% | Sold out |
| Salem Investment Counselors Inc | 0 | $0 | 0.00% | −60−100.0% | Sold out |
| IFP Advisors, Inc | 0 | $0 | 0.00% | 0 | Sold out |
| True Wealth Design, LLC | 0 | $0 | 0.00% | −42−100.0% | Sold out |
| Rothschild Investment LLC | 0 | $0 | 0.00% | −40−100.0% | Sold out |
| Mather Group, LLC. | 0 | $0 | 0.00% | −21−100.0% | Sold out |
| Parkworth Wealth Management, Inc. | 0 | $0 | 0.00% | −4−100.0% | Sold out |