Adicet Bio (ACET) Options Chain
NASDAQ: ACETHealth CareBiotechnology: Pharmaceutical PreparationsUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Nov 20, 2026
- Days to expiration
- 41
- Share price
- $5.61
- Put/call ratio (OI)
- 5.20
- ATM implied volatility
- 225.6%
- Expected move
- ±$4.24
- Open interest (C / P)
- 10 / 52
ACET options summary
The ACET options chain for the November 20, 2026 expiration lists 1 call and 2 put contracts, with 41 days until expiration. Open interest stands at 10 calls and 52 puts, a put/call ratio of 5.20, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $5.00 strike is 225.6%, which implies the market expects a move of about ±$4.24 (75.6%) in Adicet Bio stock by expiration.
The most open interest sits at the $12.50 call (10 contracts) and the $5.00 put (40 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
ACET options chain · November 20, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 5.00 | 0.00 | 2.55 | 0.05 | |||||
| — | — | — | 7.50 | 0.15 | 2.60 | 1.75 | |||||
| 1.05 | 0.00 | 3.10 | 12.50 | — | — | — | |||||
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 ACET put/call ratio?
For the November 20, 2026 expiration, the ACET put/call ratio based on open interest is 5.20 (52 puts vs 10 calls). A ratio above 1 means more puts than calls.
What is ACET's implied volatility?
At-the-money implied volatility for ACET options expiring November 20, 2026 is about 225.6%, an annualized estimate of how much the market expects Adicet Bio stock to move.
How many ACET option expiration dates are there?
ACET 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.