CME open interest by strike
From the closing options book · October 20, 2026 · updated after every close
At the October 20, 2026 close, CME options within 45 days held 5,247 calls and 4,451 puts in open interest, a put/call ratio of 0.85. The biggest call strike near the money was 300 and the biggest put strike 300.
CME open interest by strike, within 5% of the close
300 carried 1,167 calls and 300 carried 743 puts.
Open interest counts contracts still open after the close; it settles overnight. Large strikes are where dealer hedging is concentrated, which is why open interest feeds the gamma levels and max pain on the other CME pages.
These are the October 20, 2026 closing numbers. Members see CME's map move live all session.
Common questions
5,247 calls and 4,451 puts within 45 days at the October 20, 2026 close.
300 near the money, with 1,167 contracts.
300 near the money, with 743 contracts.
Compare: open interest by strike on other tickers
Measured from the closing options book and rebuilt after every close. Nothing on this page is live. Levels are where dealer hedging is concentrated, not targets or forecasts. Not investment advice.