MDY open interest by strike
From the closing options book · October 20, 2026 · updated after every close
At the October 20, 2026 close, MDY options within 45 days held 607 calls and 923 puts in open interest, a put/call ratio of 1.52. The biggest call strike near the money was 685 and the biggest put strike 655.
MDY open interest by strike, within 5% of the close
685 carried 320 calls and 655 carried 331 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 MDY pages.
These are the October 20, 2026 closing numbers. Members see MDY's map move live all session.
Common questions
607 calls and 923 puts within 45 days at the October 20, 2026 close.
685 near the money, with 320 contracts.
655 near the money, with 331 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.