Werewolf Therapeutics (HOWL) Options Chain
NASDAQ: HOWLHealthcareBiotechnologyUSD
At close: Oct 8, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Oct 16, 2026
- Days to expiration
- 8
- Share price
- $0.91
- Put/call ratio (OI)
- 0.00
- Put/call ratio (volume)
- 0.02
- ATM implied volatility
- 187.5%
- Expected move
- ±$0.2526
- Open interest (C / P)
- 4.36K / 21
HOWL options summary
The HOWL options chain for the October 16, 2026 expiration lists 5 call and 4 put contracts, with 8 days until expiration. Open interest stands at 4,363 calls and 21 puts, a put/call ratio of 0.00, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $1.00 strike is 187.5%, which implies the market expects a move of about ±$0.2526 (27.8%) in Werewolf Therapeutics stock by expiration.
The most open interest sits at the $2.50 call (3.50K contracts) and the $2.50 put (17 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
HOWL options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 0.47 | 0.40 | 0.55 | 0.50 | — | — | — | |||||
| 0.05 | 0.00 | 0.05 | 1.00 | 0.00 | 0.40 | 0.15 | |||||
| 0.05 | 0.00 | 0.05 | 2.50 | 1.30 | 1.85 | 1.50 | |||||
| 0.05 | 0.00 | 0.00 | 5.00 | 3.80 | 4.40 | 4.00 | |||||
| 0.05 | 0.00 | 0.00 | 7.50 | 6.10 | 7.20 | 7.35 | |||||
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 HOWL put/call ratio?
For the October 16, 2026 expiration, the HOWL put/call ratio based on open interest is 0.00 (21 puts vs 4,363 calls), and 0.02 based on today's volume. A ratio above 1 means more puts than calls.
What is HOWL's implied volatility?
At-the-money implied volatility for HOWL options expiring October 16, 2026 is about 187.5%, an annualized estimate of how much the market expects Werewolf Therapeutics stock to move.
How many HOWL option expiration dates are there?
HOWL has 4 listed expiration dates, from Oct 16, 2026 to Apr 16, 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.