OmniAb
OABI · NASDAQ
$4.96+$0.27 (+5.76%)TodayMarket closed ·
Prev close $4.69
Who owns OABI
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 46.2% of OABI’s shares.
- Avista Capital Holdings, LP10.9%
- Whitefort Capital Management, LP7.1%
- BlackRock Institutional Trust Company, N.A.5.6%
- Ash X LP5.2%
- Next 6 largest institutions17.4%
- All other shareholders53.8%
| Holder | Shares | % of shares |
|---|---|---|
| Avista Capital Holdings, LP | 15.86M | 10.94% |
| Whitefort Capital Management, LP | 10.25M | 7.07% |
| BlackRock Institutional Trust Company, N.A. | 8.11M | 5.59% |
| Ash X LP | 7.56M | 5.21% |
| Nomura Securities Co., Ltd. | 5.03M | 3.47% |
| RLG Capco II LLC | 4.73M | 3.27% |
| Foehr (Matthew W) | 4.42M | 3.05% |
| Cadian Capital Management LP | 4.21M | 2.91% |
| Vanguard Capital Management, LLC | 3.85M | 2.66% |
| Higgins (John L) | 2.96M | 2.04% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| iShares Russell 2000 ETF | 2.78M | 1.92% |
| Vanguard Total Stock Market Index Fund | 2.38M | 1.64% |
| Vanguard Extended Market Index Fund | 1.39M | 0.96% |
| Fidelity Small Cap Index Fund | 1.19M | 0.82% |
| iShares Russell 2000 Value ETF | 1.01M | 0.70% |
Insider trades
Form 4 filings by officers, directors and large holders
Insiders made no open-market buys or sales of OABI in the last 6 months.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Nwachuku Amechi Ekeke | Award | 800.00K | — |
| Love Steven | Award | 40.00K | — |
| Love Steven | Award | 20.00K | — |
| Love Steven | Option exercise | 20.00K | — |
| Love Steven | Option exercise | 20.00K | — |
| HIGGINS JOHN L | Award | 40.00K | — |
| HIGGINS JOHN L | Award | 20.00K | — |
| HIGGINS JOHN L | Option exercise | 20.00K | — |
| HIGGINS JOHN L | Option exercise | 20.00K | — |
| Crouse Steven C. | Option exercise | 13.33K | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 8.20M
- Days to cover
- 6.75
- % of shares outstanding
- 5.65%
- Average daily volume
- 1.21M
- Change since last report
- +15.0%
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