OmniAb Inc. (OABI)
Healthcare
Biotechnology
2.00 $
-0.5%
vs. previous close
Closing price · As of: 31. Jul 2026
Who owns OmniAb Inc. (OABI)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 78.5% of the shares are freely tradable; institutional investors hold 51.0%.
Ownership Structure
Institutional ownership
Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
51.0%
Insiders
Share of the stock held by the executives, founders and major shareholders of the company itself.
15.3%
Float
Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
78.5%
Short % of float
Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
3.6%
Shares Outstanding
Total number of shares issued. Price times share count gives market cap.
145Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Whitefort Capital Management, LP. | 9.81 | 14,223,658 | +0.0 | 03/31/2026 |
| BlackRock Inc | 5.59 | 8,106,881 | +0.5 | 03/31/2026 |
| Vanguard Group Inc | 3.88 | 5,625,197 | +9.3 | 12/31/2025 |
| Cadian Capital Management LP | 2.87 | 4,157,129 | -6.3 | 03/31/2026 |
| Vanguard Capital Management, LLC | 2.75 | 3,993,652 | +0.0 | 03/31/2026 |
| Geode Capital Management, LLC | 2.02 | 2,925,579 | +7.5 | 03/31/2026 |
| Rice Hall James & Associates, LLC | 1.76 | 2,547,255 | +6.1 | 03/31/2026 |
| Private Management Group Inc | 1.68 | 2,429,166 | +0.4 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 1.78 | 2,579,634 | +0.0 | 04/30/2026 |
| iShares Russell 2000 ETF | 1.69 | 2,446,159 | +0.9 | 05/29/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.