MDB open interest by strike
From the closing options book · October 20, 2026 · updated after every close
At the October 20, 2026 close, MDB options within 45 days held 24,415 calls and 18,619 puts in open interest, a put/call ratio of 0.76. The biggest call strike near the money was 360 and the biggest put strike 350.
MDB open interest by strike, within 5% of the close
360 carried 3,460 calls and 350 carried 1,353 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 MDB pages.
These are the October 20, 2026 closing numbers. Members see MDB's map move live all session.
Common questions
24,415 calls and 18,619 puts within 45 days at the October 20, 2026 close.
360 near the money, with 3,460 contracts.
350 near the money, with 1,353 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.