MSFT open interest by strike
From the closing options book · October 20, 2026 · updated after every close
At the October 20, 2026 close, MSFT options within 45 days held 227,464 calls and 108,453 puts in open interest, a put/call ratio of 0.48. The biggest call strike near the money was 555 and the biggest put strike 540.
MSFT open interest by strike, within 5% of the close
555 carried 21,521 calls and 540 carried 7,444 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 MSFT pages.
These are the October 20, 2026 closing numbers. Members see MSFT's map move live all session.
Common questions
227,464 calls and 108,453 puts within 45 days at the October 20, 2026 close.
555 near the money, with 21,521 contracts.
540 near the money, with 7,444 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.