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Who owns OmniAb (OABI) stock

131 funds reported OmniAb (OABI) shares in their latest 13F filings, worth $164M in all. The largest holder is Whitefort Capital Management, LP ($25.2M). Last quarter 75 funds added to their stakes and 44 cut them.

Largest holders of OABI (13F)Largest holders of OABI (13F)Whitefort Capital Management, LP$25.2MBlackRock$21.9MNomura Holdings$12.4MVanguard Group$10.4MCadian Capital Management, LP$10.4MPrivate Management Group$10.0MVanguard Capital Management LLC$9.5MGeode Capital Management, LLC$7.1MRice Hall James & Associates, LLC$6.4MState Street$5.2M

Largest holders (13F)

FundSharesValueChangeQuarter
Whitefort Capital Management, LP10,248,658$25.2Mdecrease2026-06-30
BlackRock8,897,490$21.9Mincrease2026-06-30
Nomura Holdings5,028,160$12.4Mincrease2026-06-30
Vanguard Group5,625,197$10.4Mincrease2025-12-31
Cadian Capital Management, LP4,211,821$10.4Mincrease2026-06-30
Private Management Group2,013,460$10.0Mdecrease2026-09-30
Vanguard Capital Management LLC3,852,356$9.5Mdecrease2026-06-30
Geode Capital Management, LLC2,883,978$7.1Mdecrease2026-06-30
Rice Hall James & Associates, LLC2,610,434$6.4Mincrease2026-06-30
State Street2,133,549$5.2Mincrease2026-06-30
Isthmus Partners, LLC802,135$4.0Mdecrease2026-09-30
Dimensional Fund Advisors LP1,262,099$3.1Mdecrease2026-06-30
Towerview LLC1,180,000$2.9Mincrease2026-06-30
Vanguard Portfolio Management LLC980,416$2.4Mincrease2026-06-30
Charles Schwab Investment Management966,877$2.4Mincrease2026-06-30

OmniAb's latest quarter

OmniAb, Q3 2026: revenue $4.0M (+78% year over year), operating margin -409.9%, net loss $15.7M, operating cash flow $10.6M. The chart follows the revenue to costs, profit and cash.

Questions

Who owns the most OABI stock?

By the latest 13F filings: Whitefort Capital Management, LP ($25.2M); BlackRock ($21.9M); Nomura Holdings ($12.4M); Vanguard Group ($10.4M); Cadian Capital Management, LP ($10.4M).

What is the short interest in OABI?

8,544,235 shares were sold short at the 2026-10-15 settlement, 4.22% of the float.

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Updated Nov 8, 2026. Read automatically from SEC filings and public data; errors are possible. Not investment advice.