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 2026
Institutional positions in OmniAb, Inc. as of Mar 31, 2026. 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
- 128
- +2 vs. Q4 2025
- Shares held
- 56.0M
- +4.28M (+8.3%) vs. Q4 2025
- Total value
- $87.7M
- −$7.68M (−8.1%) vs. Q4 2025
- New holders
- 24
- 42 more added
- Sold out
- 22
- 38 more reduced
3 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding OmniAb, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Caitong International Asset Management Co., Ltd | 1 | $2 | 0.00% | 00.0% | Unchanged |
| SJS Investment Consulting Inc. | 3 | $5 | 0.00% | +3 | New |
| Root Financial Partners, LLC | 13 | $20 | 0.00% | +13 | New |
| True Wealth Design, LLC | 16 | $26 | 0.00% | +10+166.7% | Added |
| Wealth Preservation Advisors, LLC | 19 | $30 | 0.00% | +19 | New |
| Mather Group, LLC. | 21 | $33 | 0.00% | +21 | New |
| SBI Securities Co., Ltd. | 24 | $38 | 0.00% | 00.0% | Unchanged |
| Transamerica Financial Advisors, Inc. | 29 | $45 | 0.00% | +29 | New |
| Farther Finance Advisors, LLC | 31 | $48 | 0.00% | +30+3,000.0% | Added |
| Farmers & Merchants Investments Inc | 53 | $83 | 0.00% | 00.0% | Unchanged |
| Twin Peaks Wealth Advisors, LLC | 58 | $91 | 0.00% | +58 | New |
| Rothschild Investment LLC | 88 | $138 | 0.00% | +85+2,833.3% | Added |
| IFP Advisors, Inc | 95 | $149 | 0.00% | +95 | New |
| Fifth Third Bancorp | 127 | $199 | 0.00% | +127 | New |
| UBS Asset Management Americas Inc | 127 | $199 | 0.00% | +127 | New |
| Central Trust Co | 171 | $269 | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 283 | $444 | 0.00% | −147−34.2% | Reduced |
| Comprehensive Financial Planning, Inc. | 323 | $507 | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 361 | $567 | 0.00% | 00.0% | Unchanged |
| Dynamic Wealth Strategies, LLC | 411 | $645 | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 490 | $769 | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 510 | $801 | 0.00% | −1,493−74.5% | Reduced |
| North Star Investment Management Corp. | 550 | $864 | 0.00% | 00.0% | Unchanged |
| GAMMA Investing LLC | 932 | $1.46K | 0.00% | +932 | New |
| Optiver Holding B.V. | 944 | $1.48K | 0.00% | −312−24.8% | Reduced |
| Cheviot Value Management, LLC | 980 | $1.54K | 0.00% | 00.0% | Unchanged |
| Essential Partners LLC | 1,060 | $1.66K | 0.00% | +1,060 | New |
| Larson Financial Group LLC | 1,444 | $2.27K | 0.00% | −26−1.8% | Reduced |
| Parallel Advisors, LLC | 1,854 | $2.91K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 1,751 | $3.00K | 0.00% | −3,051−63.5% | Reduced |
| Redwood Park Advisors LLC | 2,184 | $3.43K | 0.00% | 00.0% | Unchanged |
| Jackson, Grant Investment Advisers, Inc. | 2,450 | $3.85K | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 2,451 | $3.85K | 0.00% | +324+15.2% | Added |
| GF Fund Management Co. Ltd. | 3,201 | $5.03K | 0.00% | +373+13.2% | Added |
| Sterling Capital Management LLC | 3,307 | $5.19K | 0.00% | −2,315−41.2% | Reduced |
| MAI Capital Management | 4,821 | $7.57K | 0.00% | −1,915−28.4% | Reduced |
| Advisor Group Holdings, Inc. | 5,499 | $8.63K | 0.00% | −9,969−64.4% | Reduced |
| California State Teachers Retirement System | 6,243 | $9.80K | 0.00% | −233−3.6% | Reduced |
| CWM, LLC | 7,599 | $11.9K | 0.00% | +5,106+204.8% | Added |
| Steigerwald, Gordon & Koch Inc. | 7,673 | $12.0K | 0.00% | 00.0% | Unchanged |
| Mirae Asset Global Investments Co., Ltd. | 7,829 | $12.3K | 0.00% | +834+11.9% | Added |
| Legal & General Group Plc | 9,292 | $14.6K | 0.00% | −265−2.8% | Reduced |
| Ameritas Investment Partners, Inc. | 9,652 | $15.2K | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 9,752 | $15.3K | 0.00% | +2,884+42.0% | Added |
| Squarepoint Ops LLC | 10,032 | $15.8K | 0.00% | −10,294−50.6% | Reduced |
| Mercer Global Advisors Inc | 10,048 | $15.8K | 0.00% | +10,048 | New |
| Integrated Wealth Concepts LLC | 10,651 | $16.7K | 0.00% | +10,651 | New |
| Abel Hall, LLC | 10,704 | $16.8K | 0.00% | +10,704 | New |
| Russell Investments Group, Ltd. | 10,800 | $17.0K | 0.00% | −139−1.3% | Reduced |
| Diversified Enterprises, LLC | 11,311 | $17.8K | 0.00% | +11,311 | New |
| New York State Common Retirement Fund | 11,806 | $18.5K | 0.00% | 00.0% | Unchanged |
| RSM US Wealth Management LLC | 12,178 | $19.1K | 0.00% | +1,727+16.5% | Added |
| Victory Capital Management Inc | 13,488 | $21.2K | 0.00% | +936+7.5% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 14,136 | $22.2K | 0.00% | −4,809−25.4% | Reduced |
| Point72 Asset Management, L.P. | 16,238 | $25.5K | 0.00% | +16,238 | New |
| Thrive Wealth Management, LLC | 17,281 | $27.1K | 0.00% | 00.0% | Unchanged |
| Voya Investment Management LLC | 18,190 | $28.6K | 0.00% | −1,306−6.7% | Reduced |
| Prudential Financial Inc | 19,279 | $30.3K | 0.00% | +19,279 | New |
| BFSG, LLC | 20,815 | $32.7K | 0.00% | +380+1.9% | Added |
| HighTower Advisors, LLC | 21,068 | $33.1K | 0.00% | −314−1.5% | Reduced |
| ProShare Advisors LLC | 22,552 | $35.4K | 0.00% | −3,024−11.8% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 22,568 | $35.4K | 0.00% | 00.0% | Unchanged |
| State of Wyoming | 24,694 | $38.8K | 0.00% | +12,451+101.7% | Added |
| JustInvest LLC | 25,227 | $39.6K | 0.00% | −6,210−19.8% | Reduced |
| China Universal Asset Management Co., Ltd. | 25,546 | $40.1K | 0.00% | +2,089+8.9% | Added |
| BNP Paribas Arbitrage, SA | 27,339 | $42.9K | 0.00% | +1,469+5.7% | Added |
| Jane Street Group, LLC | 27,551 | $43.3K | 0.00% | −107,827−79.6% | Reduced |
| Legato Capital Management LLC | 28,196 | $44.3K | 0.00% | −2,483−8.1% | Reduced |
| Barclays PLC | 28,760 | $45.2K | 0.00% | −136,797−82.6% | Reduced |
| Intech Investment Management LLC | 28,937 | $45.4K | 0.00% | −8,883−23.5% | Reduced |
| Manufacturers Life Insurance Company, The | 28,943 | $45.4K | 0.00% | 00.0% | Unchanged |
| Nine Masts Capital Ltd | 29,062 | $45.6K | 0.01% | +29,062 | New |
| Woodstock Corp | 34,418 | $54.0K | 0.00% | −822−2.3% | Reduced |
| American Century Companies Inc | 34,816 | $54.7K | 0.00% | +34,816 | New |
| Tower Research Capital LLC (TRC) | 35,306 | $55.4K | 0.00% | +29,036+463.1% | Added |
| LPL Financial LLC | 36,164 | $56.8K | 0.00% | +16,810+86.9% | Added |
| Susquehanna International Group, LLP | 41,629 | $65.4K | 0.00% | +25,671+160.9% | Added |
| Jacobs Levy Equity Management, Inc | 42,966 | $67.5K | 0.00% | −195,223−82.0% | Reduced |
| Blair William & Co | 43,216 | $67.8K | 0.00% | +50.0% | Added |
| XTX Topco Ltd | 44,659 | $70.1K | 0.00% | +32,637+271.5% | Added |
| MetLife Investment Management | 48,132 | $75.6K | 0.00% | +11,580+31.7% | Added |
| Shay Capital LLC | 49,662 | $78.0K | 0.01% | +49,662 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 50,113 | $78.7K | 0.00% | +1,270+2.6% | Added |
| Wells Fargo & Company | 50,133 | $78.7K | 0.00% | −75,503−60.1% | Reduced |
| Vanguard Global Advisers, LLC | 51,396 | $80.7K | 0.00% | +51,396 | New |
| SEI Investments Co | 60,578 | $95.1K | 0.00% | +17,718+41.3% | Added |
| Price T Rowe Associates Inc | 77,040 | $122.0K | 0.00% | +23,850+44.8% | Added |
| Deutsche Bank AG | 92,670 | $145.5K | 0.00% | +15,445+20.0% | Added |
| UBS Group AG | 102,507 | $160.9K | 0.00% | +34,533+50.8% | Added |
| AQR Capital Management LLC | 115,647 | $181.6K | 0.00% | +91,494+378.8% | Added |
| JPMorgan Chase & Co | 120,102 | $187.4K | 0.00% | −173,066−59.0% | Reduced |
| Bank of America Corp | 121,656 | $191.0K | 0.00% | +38,568+46.4% | Added |
| Invesco Ltd. | 135,087 | $212.1K | 0.00% | −1,222−0.9% | Reduced |
| Cornerstone Capital, Inc. | 142,286 | $223.4K | 0.02% | +33,075+30.3% | Added |
| Rhumbline Advisers | 159,235 | $250.0K | 0.00% | −3,538−2.2% | Reduced |
| Stonepine Capital Management, LLC | 164,045 | $257.6K | 0.23% | −536,955−76.6% | Reduced |
| Alliancebernstein L.P. | 150,592 | $278.6K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 189,536 | $297.6K | 0.00% | −9,444−4.7% | Reduced |
| Arbiter Partners Capital Management LLC | 192,585 | $302.4K | 0.21% | 00.0% | Unchanged |
| Bridgeway Capital Management, LLC | 198,900 | $312.3K | 0.01% | 00.0% | Unchanged |