ASMB · Assembly Biosciences, Inc.

Track ASMB — free Ask ALVIS about ASMB

$25.11 -0.46 (-1.80%) At close · Jul 29

Market Cap

$406.37M

15.89M

Options Chain

15-min delayed Underlying $25.11 · at close Jul 29, 2026 Options Calculator

Positioning

Aug 21, 2026 · 22 days to expiry · 16 contracts

Put / call OI

0.60

Call-heavy positioning

Open interest

621

contracts outstanding

Volume

traded today

Max pain

$25.00

$0.11 below spot

ATM implied vol

77.8%

market's expected move

Open interest by strike

Calls Puts

12.5

17.5

22.5

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 22d Sep 18 50d Dec 18 141d Mar 19 232d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	207.1%	0.947	—		—	—	—	—	0
Call · $12.5 In the money Last — Breakeven — Implied vol 207.1% Delta 0.947 ≈95% ITM Gamma 0.008 Theta -0.032 Vega 0.007 Open interest 0 Model this call Put · $12.5 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	160.3%	0.933	—		—	—	—	—	0
Call · $15 In the money Last — Breakeven — Implied vol 160.3% Delta 0.933 ≈93% ITM Gamma 0.013 Theta -0.03 Vega 0.008 Open interest 0 Model this call Put · $15 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	126.8%	0.906	—		$0.60	-0.097	129.5%	3	3
Call · $17.5 In the money Last — Breakeven — Implied vol 126.8% Delta 0.906 ≈91% ITM Gamma 0.021 Theta -0.031 Vega 0.009 Open interest 0 Model this call Put · $17.5 Last $0.60 Breakeven $16.90 Implied vol 129.5% Delta -0.097 ≈10% ITM Gamma 0.022 Theta -0.031 Vega 0.009 Open interest 3 Model this put
0	—	96.6%	0.859	—		—	-0.138	95.2%	—	0
Call · $20 In the money Last — Breakeven — Implied vol 96.6% Delta 0.859 ≈86% ITM Gamma 0.037 Theta -0.032 Vega 0.015 Open interest 0 Model this call Put · $20 Last — Breakeven — Implied vol 95.2% Delta -0.138 ≈14% ITM Gamma 0.037 Theta -0.029 Vega 0.015 Open interest 0 Model this put
0	—	80.3%	0.745	—		$0.85	-0.249	77%	1	110
Call · $22.5 In the money Last — Breakeven — Implied vol 80.3% Delta 0.745 ≈75% ITM Gamma 0.064 Theta -0.037 Vega 0.02 Open interest 0 Model this call Put · $22.5 Last $0.85 Breakeven $21.65 Implied vol 77% Delta -0.249 ≈25% ITM Gamma 0.066 Theta -0.033 Vega 0.02 Open interest 110 Model this put
0	—	97.9%	0.559	—		$1.75	-0.455	57.7%	50	120
Call · $25 In the money Last — Breakeven — Implied vol 97.9% Delta 0.559 ≈56% ITM Gamma 0.066 Theta -0.056 Vega 0.024 Open interest 0 Model this call Put · $25 Last $1.75 Breakeven $23.25 Implied vol 57.7% Delta -0.455 ≈45% ITM Gamma 0.113 Theta -0.031 Vega 0.025 Open interest 120 Model this put
Underlying $25.11
380	9	77.3%	0.207	$0.60		—	-0.778	82.2%	—	0
Call · $30 Last $0.60 Breakeven $30.60 Implied vol 77.3% Delta 0.207 ≈21% ITM Gamma 0.059 Theta -0.031 Vega 0.018 Open interest 380 Model this call Put · $30 In the money Last — Breakeven — Implied vol 82.2% Delta -0.778 ≈78% ITM Gamma 0.059 Theta -0.032 Vega 0.018 Open interest 0 Model this put
8	2	119.5%	0.164	$0.50		—	—	—	—	0
Call · $35 Last $0.50 Breakeven $35.50 Implied vol 119.5% Delta 0.164 ≈16% ITM Gamma 0.034 Theta -0.042 Vega 0.013 Open interest 8 Model this call Put · $35 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put

About this data

Greeks, implied volatility, open interest and the last price come from the latest daily snapshot and are 15-minute delayed. 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. Max pain is the listed strike where the most open interest would expire worthless — a positioning reference, not a forecast.

Key facts CIK 1426800 CUSIP 045396207 13F (30d) 4 filings 4 filers Visit website Investor relations