Tandem Diabetes Care (TNDM) Options Chain
NASDAQ: TNDMHealth CareMedical/Dental InstrumentsUSD
At close: Oct 8, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Oct 16, 2026
- Days to expiration
- 7
- Share price
- $15.68
- Put/call ratio (volume)
- 0.16
- Expected move
- ±$0.1357
- Open interest (C / P)
- 0 / 0
TNDM options summary
The TNDM options chain for the October 16, 2026 expiration lists 11 call and 7 put contracts, with 7 days until expiration. At-the-money implied volatility near the $16.00 strike is 6.3%, which implies the market expects a move of about ±$0.1357 (0.9%) in Tandem Diabetes Care stock by expiration. The most open interest sits at the $15.00 call (0 contracts) and the $15.00 put (0 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
TNDM options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 1.70 | 0.00 | 0.00 | 15.00 | 0.00 | 0.00 | 0.32 | |||||
| 1.43 | 0.00 | 0.00 | 16.00 | 0.00 | 0.00 | 0.64 | |||||
| 0.59 | 0.00 | 0.00 | 17.00 | 0.00 | 0.00 | 1.02 | |||||
| 0.50 | 0.00 | 0.00 | 18.00 | — | — | — | |||||
| 0.30 | 0.00 | 0.00 | 19.00 | 0.00 | 0.00 | 2.11 | |||||
| 0.05 | 0.00 | 0.00 | 20.00 | 0.00 | 0.00 | 3.50 | |||||
| 0.30 | 0.00 | 0.00 | 21.00 | 0.00 | 0.00 | 2.10 | |||||
| 0.20 | 0.00 | 0.00 | 22.00 | — | — | — | |||||
| 0.90 | 0.00 | 0.00 | 25.00 | — | — | — | |||||
| 0.25 | 0.00 | 0.00 | 30.00 | — | — | — | |||||
| 0.05 | 0.00 | 0.00 | 31.00 | 0.00 | 0.00 | 8.90 | |||||
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 TNDM's implied volatility?
At-the-money implied volatility for TNDM options expiring October 16, 2026 is about 6.3%, an annualized estimate of how much the market expects Tandem Diabetes Care stock to move.
How many TNDM option expiration dates are there?
TNDM has 5 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.