Alumis (ALMS) Options Chain
NASDAQ: ALMSHealth CareBiotechnology: Pharmaceutical PreparationsUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Nov 20, 2026
- Days to expiration
- 40
- Share price
- $7.16
- Put/call ratio (OI)
- 1.20
- Put/call ratio (volume)
- 0.20
- Expected move
- ±$1.91
- Open interest (C / P)
- 298 / 359
ALMS options summary
The ALMS options chain for the November 20, 2026 expiration lists 4 call and 5 put contracts, with 40 days until expiration. Open interest stands at 298 calls and 359 puts, a put/call ratio of 1.20, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $7.00 strike is 80.6%, which implies the market expects a move of about ±$1.91 (26.7%) in Alumis stock by expiration.
The most open interest sits at the $8.00 call (233 contracts) and the $8.00 put (126 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
ALMS options chain · November 20, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 1.80 | 0.20 | 2.85 | 6.00 | 0.15 | 0.45 | 0.27 | |||||
| 0.90 | 0.20 | 1.25 | 7.00 | 0.45 | 1.15 | 0.73 | |||||
| 0.55 | 0.40 | 0.55 | 8.00 | 0.15 | 2.20 | 1.15 | |||||
| 0.30 | 0.20 | 0.35 | 9.00 | 1.70 | 2.75 | 1.34 | |||||
| — | — | — | 10.00 | 1.55 | 4.60 | 2.92 | |||||
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 ALMS put/call ratio?
For the November 20, 2026 expiration, the ALMS put/call ratio based on open interest is 1.20 (359 puts vs 298 calls), and 0.20 based on today's volume. A ratio above 1 means more puts than calls.
What is ALMS's implied volatility?
At-the-money implied volatility for ALMS options expiring November 20, 2026 is about 80.6%, an annualized estimate of how much the market expects Alumis stock to move.
How many ALMS option expiration dates are there?
ALMS has 7 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.