RMD Open Interest
ResMed Inc (RMD) had 25.84K open option contracts as of Nov 4, 2026: 4.96K calls and 20.88K puts. Open interest rose 22.6% over the past four weeks, and is RMD's highest level in 12 weeks. The put/call open interest ratio is 4.21, so puts outnumber calls.
Open Interest by Strike
Showing results for RMD, 2026-11-20(m), calls & puts
Open Interest Stats
Showing results for RMD, 2026-11-20(m), calls & puts
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| Put Open Interest Total | |
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Highest Open Interest Options
Showing results for RMD, 2026-11-20(m), calls & puts
Open Interest Total by Expiry
Showing results for RMD, 2026-11-20(m), calls & puts. View all expiries
Open Interest History
Showing daily totals for RMD, all expirations, calls & puts. View full history
RMD 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 RMD have?
ResMed had 25.84K open option contracts as of Nov 4, 2026. Over the past 30 days, open interest averaged 22.58K contracts.
Is RMD open interest rising or falling?
Open interest rose 22.6% over the past four weeks, and is RMD's highest level in 12 weeks. It was 21.07K contracts on Oct 7, 2026. See the RMD open interest history for a longer view.
What is the RMD put/call open interest ratio?
The ResMed put/call open interest ratio was 4.21 as of Nov 4, 2026. Four weeks earlier it was 2.70.
What is ResMed Inc?
ResMed makes continuous positive airway pressure devices and the masks used to treat obstructive sleep apnea, a condition in which the airway repeatedly collapses during sleep.