Tectonic Therapeutic (TECX) Options Chain
NASDAQ: TECXHealth CareBiotechnology: Biological Products (No Diagnostic Substances)USD
At close: Oct 8, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Oct 16, 2026
- Days to expiration
- 8
- Share price
- $22.75
- Put/call ratio (OI)
- 2.33
- Put/call ratio (volume)
- 53.29
- ATM implied volatility
- 197.1%
- Expected move
- ±$6.64
- Open interest (C / P)
- 393 / 917
TECX options summary
The TECX options chain for the October 16, 2026 expiration lists 8 call and 10 put contracts, with 8 days until expiration. Open interest stands at 393 calls and 917 puts, a put/call ratio of 2.33, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $22.50 strike is 197.1%, which implies the market expects a move of about ±$6.64 (29.2%) in Tectonic Therapeutic stock by expiration.
The most open interest sits at the $30.00 call (352 contracts) and the $25.00 put (604 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
TECX options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 7.50 | 0.00 | 0.00 | 0.10 | |||||
| — | — | — | 10.00 | 0.00 | 0.00 | 1.25 | |||||
| — | — | — | 12.50 | 0.00 | 0.00 | 1.80 | |||||
| — | — | — | 15.00 | 0.00 | 0.00 | 2.45 | |||||
| — | — | — | 17.50 | 0.00 | 4.90 | 0.15 | |||||
| 13.50 | 10.00 | 14.80 | 20.00 | 0.00 | 0.00 | 6.00 | |||||
| — | — | — | 22.50 | 0.10 | 4.90 | 2.00 | |||||
| 1.80 | 0.00 | 4.90 | 25.00 | 1.00 | 5.30 | 1.60 | |||||
| 0.30 | 0.00 | 0.75 | 30.00 | 6.40 | 9.50 | 7.99 | |||||
| 1.00 | 0.00 | 0.95 | 35.00 | 0.00 | 0.00 | 11.50 | |||||
| 4.30 | 1.80 | 6.50 | 40.00 | — | — | — | |||||
| 1.00 | 0.00 | 0.95 | 45.00 | — | — | — | |||||
| 2.50 | 0.00 | 0.95 | 50.00 | — | — | — | |||||
| 0.50 | 0.00 | 0.95 | 55.00 | — | — | — | |||||
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 TECX put/call ratio?
For the October 16, 2026 expiration, the TECX put/call ratio based on open interest is 2.33 (917 puts vs 393 calls), and 53.29 based on today's volume. A ratio above 1 means more puts than calls.
What is TECX's implied volatility?
At-the-money implied volatility for TECX options expiring October 16, 2026 is about 197.1%, 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.