130 calls and 68 puts traded on Nov 4, 2026, 198 contracts in total. Open interest was 7.22K contracts. Over the past 30 days, volume averaged 139 contracts per day. The CNM option volume chart shows volume by strike and expiration date.

Core & Main IV rank is 13, so its 30-day implied volatility of 41.4% is near the bottom of its one-year range. Over the past year it ranged from 22.6% on Dec 26, 2025 to 171.8% on Oct 16, 2026. See the CNM implied volatility history for a longer view.

The Core & Main put/call volume ratio was 0.52 on Nov 4, 2026, so calls outnumber puts. The put/call open interest ratio was 0.36. The CNM open interest chart shows calls and puts at each strike.

As of the Nov 4, 2026 close, max pain for Core & Main options about one week from expiration was $42.92, 11.8% below the $48.64 close. The CNM max pain chart shows it for every expiration date.

Based on 7-day implied volatility of 32.9%, options price a move of about ±$2.21 (±4.5%) over the next week, a range of roughly $46.43 to $50.85 from the Nov 4, 2026 close. The CNM expected move chart shows it for every expiration date.