Armata Pharmaceuticals (ARMP) Options Chain
NYSE: ARMPHealth CareBiotechnology: Biological Products (No Diagnostic Substances)USD
At close: Oct 8, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Oct 16, 2026
- Days to expiration
- 8
- Share price
- $3.86
- Put/call ratio (OI)
- 0.06
- Put/call ratio (volume)
- 0.01
- ATM implied volatility
- 349.6%
- Expected move
- ±$2.00
- Open interest (C / P)
- 1.01K / 58
ARMP options summary
The ARMP options chain for the October 16, 2026 expiration lists 2 call and 3 put contracts, with 8 days until expiration. Open interest stands at 1,007 calls and 58 puts, a put/call ratio of 0.06, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $5.00 strike is 349.6%, which implies the market expects a move of about ±$2.00 (51.8%) in Armata Pharmaceuticals stock by expiration.
The most open interest sits at the $7.50 call (1.00K contracts) and the $2.50 put (42 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
ARMP options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 2.50 | 0.00 | 0.05 | 0.05 | |||||
| 0.13 | 0.00 | 0.90 | 5.00 | 0.05 | 3.10 | 1.35 | |||||
| 0.20 | 0.00 | 2.80 | 7.50 | 2.00 | 5.70 | 2.30 | |||||
In-the-money callsIn-the-money puts. IV = implied volatility, OI = open interest (contracts). Each contract covers 100 shares. Quotes delayed at least 15 minutes.
Frequently asked questions
What is the ARMP put/call ratio?
For the October 16, 2026 expiration, the ARMP put/call ratio based on open interest is 0.06 (58 puts vs 1,007 calls), and 0.01 based on today's volume. A ratio above 1 means more puts than calls.
What is ARMP's implied volatility?
At-the-money implied volatility for ARMP options expiring October 16, 2026 is about 349.6%, an annualized estimate of how much the market expects Armata Pharmaceuticals stock to move.
How many ARMP option expiration dates are there?
ARMP has 3 listed expiration dates, from Oct 16, 2026 to Feb 19, 2027.
What does "in the money" mean?
A call is in the money when the strike price is below the current share price; a put is in the money when the strike is above it. In-the-money contracts have intrinsic value and are shaded in the table.