MMSI Open Interest
Merit Medical Systems Inc (MMSI) had 1.81K open option contracts as of Nov 4, 2026: 438 calls and 1.37K puts. Open interest rose 157.9% over the past four weeks. The put/call open interest ratio is 3.13, so puts outnumber calls.
Open Interest by Strike
Showing results for MMSI, 2026-11-20(m), calls & puts
Open Interest Stats
Showing results for MMSI, 2026-11-20(m), calls & puts
| Call Open Interest Total | |
|---|---|
| Put Open Interest Total | |
| Open Interest Total | |
| Put-Call Open Interest Ratio |
Highest Open Interest Options
Showing results for MMSI, 2026-11-20(m), calls & puts
Open Interest Total by Expiry
Showing results for MMSI, 2026-11-20(m), calls & puts. View all expiries
Open Interest History
Showing daily totals for MMSI, all expirations, calls & puts. View full history
MMSI Open Interest FAQ
What is open interest?
Open interest is the number of option contracts that are open and not yet closed, exercised, or expired. The Options Clearing Corporation calculates it once a day from the previous day's trades, and it is published before the market opens.
How much open interest does MMSI have?
Merit Medical Systems had 1.81K open option contracts as of Nov 4, 2026. Over the past 30 days, open interest averaged 803 contracts.
Is MMSI open interest rising or falling?
Open interest rose 157.9% over the past four weeks. It was 701 contracts on Oct 7, 2026. See the MMSI open interest history for a longer view.
What is the MMSI put/call open interest ratio?
The Merit Medical Systems put/call open interest ratio was 3.13 as of Nov 4, 2026. Four weeks earlier it was 0.44.
What is Merit Medical Systems Inc?
Merit Medical Systems Inc is a medical equipment company that develops and manufactures products for interventional cardiology, radiology, and endoscopy procedures.