CMS Open Interest
CMS Energy Corporation (CMS) had 3.61K open option contracts as of Nov 4, 2026: 2.89K calls and 717 puts. Open interest was little changed over the past four weeks. The put/call open interest ratio is 0.25, so calls outnumber puts.
Open Interest by Strike
Showing results for CMS, 2026-11-20(m), calls & puts
Open Interest Stats
Showing results for CMS, 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 CMS, 2026-11-20(m), calls & puts
Open Interest Total by Expiry
Showing results for CMS, 2026-11-20(m), calls & puts. View all expiries
Open Interest History
Showing daily totals for CMS, all expirations, calls & puts. View full history
CMS 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 CMS have?
CMS Energy had 3.61K open option contracts as of Nov 4, 2026. Over the past 30 days, open interest averaged 3.55K contracts.
Is CMS open interest rising or falling?
Open interest was little changed over the past four weeks. It was 3.59K contracts on Oct 7, 2026. See the CMS open interest history for a longer view.
What is the CMS put/call open interest ratio?
The CMS Energy put/call open interest ratio was 0.25 as of Nov 4, 2026. Four weeks earlier it was 0.31.
What is CMS Energy Corporation?
CMS Energy is an energy holding company with three principal businesses.