Altimmune (ALT) Options Chain
NASDAQ: ALTHealth CareBiotechnology: Pharmaceutical PreparationsUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Nov 6, 2026
- Days to expiration
- 26
- Share price
- $2.61
- Put/call ratio (OI)
- 0.31
- Put/call ratio (volume)
- 0.63
- Expected move
- ±$0.6122
- Open interest (C / P)
- 287 / 88
ALT options summary
The ALT options chain for the November 6, 2026 expiration lists 2 call and 3 put contracts, with 26 days until expiration. Open interest stands at 287 calls and 88 puts, a put/call ratio of 0.31, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $3.00 strike is 87.9%, which implies the market expects a move of about ±$0.6122 (23.5%) in Altimmune stock by expiration.
The most open interest sits at the $3.00 call (270 contracts) and the $3.00 put (88 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
ALT options chain · November 6, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 0.70 | 0.00 | 2.75 | 2.00 | — | — | — | |||||
| 0.12 | 0.05 | 0.10 | 3.00 | 0.25 | 0.55 | 0.25 | |||||
| — | — | — | 4.00 | — | — | 1.32 | |||||
| — | — | — | 6.00 | — | — | 3.34 | |||||
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 ALT put/call ratio?
For the November 6, 2026 expiration, the ALT put/call ratio based on open interest is 0.31 (88 puts vs 287 calls), and 0.63 based on today's volume. A ratio above 1 means more puts than calls.
What is ALT's implied volatility?
At-the-money implied volatility for ALT options expiring November 6, 2026 is about 87.9%, an annualized estimate of how much the market expects Altimmune stock to move.
How many ALT option expiration dates are there?
ALT has 11 listed expiration dates, from Oct 16, 2026 to Jan 19, 2029.
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.