OABI · OmniAb, Inc.

Track OABI — free

$3.92 +0.10 (+2.62%) At close · Aug 18

Market Cap

$31.27M

145.39M

Options Chain

Underlying $3.92 · at close Aug 18, 2026 Options Calculator

Positioning

Aug 21, 2026 · 2 days to expiry · 6 contracts · mixed snapshot sessions · Aug 17, 2026–Aug 18, 2026

Put / call OI

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mixed snapshot sessions

Open interest

—

mixed snapshot sessions

Volume

—

mixed snapshot sessions

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 2d Sep 18 30d Oct 16 58d Jan 15 149d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
186	13	299.6%	0.971	$1.66		$0.05	-0.166	915.9%	6	11
Call · $2.5 In the money Snapshot session Aug 18, 2026 Last $1.66 Breakeven $4.16 Implied vol 299.6% Delta 0.971 ≈97% ITM Gamma 0.064 Theta -0.013 Vega 0 Open interest 186 Model this call Put · $2.5 Snapshot session Aug 17, 2026 Last $0.05 Breakeven $2.45 Implied vol 915.9% Delta -0.166 ≈17% ITM Gamma 0.08 Theta -0.144 Vega 0.001 Open interest 11 Model this put
Underlying $3.92
649	105	262.8%	0.171	$0.01		$1.05	-0.887	212.8%	92	12
Call · $5 Snapshot session Aug 18, 2026 Last $0.01 Breakeven $5.01 Implied vol 262.8% Delta 0.171 ≈17% ITM Gamma 0.288 Theta -0.042 Vega 0.001 Open interest 649 Model this call Put · $5 In the money Snapshot session Aug 18, 2026 Last $1.05 Breakeven $3.95 Implied vol 212.8% Delta -0.887 ≈89% ITM Gamma 0.266 Theta -0.025 Vega 0.001 Open interest 12 Model this put
10	7	—	—	$0.08		$3.76	—	—	2	1
Call · $7.5 Snapshot session Aug 17, 2026 Last $0.08 Breakeven $7.58 Implied vol — Delta — Gamma — Theta — Vega — Open interest 10 Model this call Put · $7.5 In the money Snapshot session Aug 17, 2026 Last $3.76 Breakeven $3.74 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this put

About this data

Each contract's last price, volume, greeks, implied volatility and open interest belongs to the snapshot session shown in its details; unknown means the provider omitted the timestamp. This chain has mixed snapshot sessions · Aug 17, 2026–Aug 18, 2026. Cross-contract positioning totals are shown only when every returned row has the same known session. Bid and ask are not included on this plan.

In-the-money strikes are tinted, deepening toward the money, and the bar beside each open-interest figure scales to the heaviest strike shown.

Key facts CIK 1846253 CUSIP 68218J111 13F (30d) 138 filings 137 filers Visit website Investor relations