Option chain for CMS Energy (CMS): calls and puts for every expiration and strike, with quotes, volume, open interest, implied volatility and greeks. As of Oct 19, 2026, CMS had 4 option expirations, from Nov 20, 2026 to Jun 17, 2027, and 814 contracts traded that day. The nearest expiration, Nov 20, 2026, had an at-the-money implied volatility of 22.3% (+15% on the day) and 232 contracts traded; the busiest was Dec 18, 2026, with 545.

For the latest figures, see CMS options overview.

Key numbers

Expirations: at-the-money implied volatility, change on the day, volume

Nov 20, 2026 (32 days): ATM IV 22.3% (+15%), volume 232
Dec 18, 2026 (60 days): ATM IV 16.7% (-11%), volume 545
Mar 19, 2027 (151 days): ATM IV 19.2% (-1%), volume 6
Jun 17, 2027 (241 days): ATM IV 20.8% (+9%), volume 31

Data as of October 19, 2026.

CMS Option Chain

Detailed and comprehensive option chain for each expiration listed for CMS. Includes volume, open interest, implied volatility, and bid/ask for each strike. Investigate further by clicking on a strike and seeing trade activity, volatility movement, and yesterday's closing values. Use the built-in options profit calculator to see the profit or loss of any CMS options strategy.

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