CNM Open Interest
Core & Main Inc (CNM) had 7.22K open option contracts as of Nov 4, 2026: 5.32K calls and 1.89K puts. Open interest rose 3.8% over the past four weeks. The put/call open interest ratio is 0.36, so calls outnumber puts.
Open Interest by Strike
Showing results for CNM, 2026-11-20(m), calls & puts
Open Interest Stats
Showing results for CNM, 2026-11-20(m), calls & puts
| Call Open Interest Total | |
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| Put Open Interest Total | |
| Open Interest Total | |
| Put-Call Open Interest Ratio |
Highest Open Interest Options
Showing results for CNM, 2026-11-20(m), calls & puts
Open Interest Total by Expiry
Showing results for CNM, 2026-11-20(m), calls & puts. View all expiries
Open Interest History
Showing daily totals for CNM, all expirations, calls & puts. View full history
CNM 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 CNM have?
Core & Main had 7.22K open option contracts as of Nov 4, 2026. Over the past 30 days, open interest averaged 7.04K contracts.
Is CNM open interest rising or falling?
Open interest rose 3.8% over the past four weeks. It was 6.95K contracts on Oct 7, 2026. See the CNM open interest history for a longer view.
What is the CNM put/call open interest ratio?
The Core & Main put/call open interest ratio was 0.36 as of Nov 4, 2026. Four weeks earlier it was 0.29.
What is Core & Main Inc?
Core & Main is a leading specialty distributor with a focus on water, wastewater, storm drainage, and fire protection products.