50 calls and 8 puts traded on Nov 4, 2026, 58 contracts in total. Open interest was 3.61K contracts. Over the past 30 days, volume averaged 102 contracts per day. The CMS option volume chart shows volume by strike and expiration date.

CMS Energy IV rank is 4, so its 30-day implied volatility of 18.4% is near the bottom of its one-year range. Over the past year it ranged from 13.0% on Sep 24, 2026 to 153.2% on Oct 16, 2026. See the CMS implied volatility history for a longer view.

The CMS Energy put/call volume ratio was 0.16 on Nov 4, 2026, so calls outnumber puts. The put/call open interest ratio was 0.25. The CMS open interest chart shows calls and puts at each strike.

As of the Nov 4, 2026 close, max pain for CMS Energy options about one week from expiration was $64.78, 8.7% below the $70.97 close. The CMS max pain chart shows it for every expiration date.

Based on 7-day implied volatility of 18.3%, options price a move of about ±$1.80 (±2.5%) over the next week, a range of roughly $69.17 to $72.77 from the Nov 4, 2026 close. The CMS expected move chart shows it for every expiration date.