Entera Bio (ENTX) Options Chain
NASDAQ: ENTXHealth CareBiotechnology: Biological Products (No Diagnostic Substances)USD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Oct 16, 2026
- Days to expiration
- 7
- Share price
- $2.66
- Put/call ratio (OI)
- 0.00
- Put/call ratio (volume)
- 0.00
- ATM implied volatility
- 206.3%
- Expected move
- ±$0.7598
- Open interest (C / P)
- 1.63K / 0
ENTX options summary
The ENTX options chain for the October 16, 2026 expiration lists 3 call and 0 put contracts, with 7 days until expiration. Open interest stands at 1,629 calls and 0 puts, a put/call ratio of 0.00, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $3.00 strike is 206.3%, which implies the market expects a move of about ±$0.7598 (28.6%) in Entera Bio stock by expiration.
Summary generated from market data by MetaCap's automated system. Methodology
ENTX options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 2.05 | 0.00 | 4.00 | 1.00 | — | — | — | |||||
| 0.30 | 0.10 | 0.30 | 3.00 | — | — | — | |||||
| 0.08 | 0.00 | 2.55 | 4.00 | — | — | — | |||||
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 ENTX put/call ratio?
For the October 16, 2026 expiration, the ENTX put/call ratio based on open interest is 0.00 (0 puts vs 1,629 calls), and 0.00 based on today's volume. A ratio above 1 means more puts than calls.
What is ENTX's implied volatility?
At-the-money implied volatility for ENTX options expiring October 16, 2026 is about 206.3%, an annualized estimate of how much the market expects Entera Bio stock to move.
How many ENTX option expiration dates are there?
ENTX has 4 listed expiration dates, from Oct 16, 2026 to May 21, 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.