Merit Medical Systems (MMSI) Options Chain
NASDAQ: MMSIHealth CareMedical/Dental InstrumentsUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Nov 20, 2026
- Days to expiration
- 40
- Share price
- $87.21
- Put/call ratio (OI)
- 1.00
- Expected move
- ±$13.99
- Open interest (C / P)
- 1 / 1
MMSI options summary
The MMSI options chain for the November 20, 2026 expiration lists 1 call and 1 put contracts, with 40 days until expiration. Open interest stands at 1 calls and 1 puts, a put/call ratio of 1.00, which is fairly balanced between calls and puts. At-the-money implied volatility near the $80.00 strike is 48.5%, which implies the market expects a move of about ±$13.99 (16.0%) in Merit Medical Systems stock by expiration.
The most open interest sits at the $100.00 call (1 contracts) and the $80.00 put (1 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
MMSI options chain · November 20, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 80.00 | 0.05 | 2.55 | 1.45 | |||||
| 0.50 | 0.00 | 1.15 | 100.00 | — | — | — | |||||
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 MMSI put/call ratio?
For the November 20, 2026 expiration, the MMSI put/call ratio based on open interest is 1.00 (1 puts vs 1 calls). A ratio above 1 means more puts than calls.
What is MMSI's implied volatility?
At-the-money implied volatility for MMSI options expiring November 20, 2026 is about 48.5%, an annualized estimate of how much the market expects Merit Medical Systems stock to move.
How many MMSI option expiration dates are there?
MMSI has 5 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.