Tectonic Therapeutic (TECX) Options Chain
NASDAQ: TECXHealth CareBiotechnology: Biological Products (No Diagnostic Substances)USD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Nov 20, 2026
- Days to expiration
- 40
- Share price
- $23.33
- Put/call ratio (OI)
- 0.40
- ATM implied volatility
- 135.7%
- Expected move
- ±$10.48
- Open interest (C / P)
- 5 / 2
TECX options summary
The TECX options chain for the November 20, 2026 expiration lists 1 call and 2 put contracts, with 40 days until expiration. Open interest stands at 5 calls and 2 puts, a put/call ratio of 0.40, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $20.00 strike is 135.7%, which implies the market expects a move of about ±$10.48 (44.9%) in Tectonic Therapeutic stock by expiration.
The most open interest sits at the $30.00 call (5 contracts) and the $20.00 put (1 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
TECX options chain · November 20, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 20.00 | 0.00 | 4.90 | 1.30 | |||||
| 3.10 | 0.00 | 4.90 | 30.00 | 5.70 | 10.00 | 5.30 | |||||
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 TECX put/call ratio?
For the November 20, 2026 expiration, the TECX put/call ratio based on open interest is 0.40 (2 puts vs 5 calls). A ratio above 1 means more puts than calls.
What is TECX's implied volatility?
At-the-money implied volatility for TECX options expiring November 20, 2026 is about 135.7%, an annualized estimate of how much the market expects Tectonic Therapeutic stock to move.
How many TECX option expiration dates are there?
TECX has 6 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.