STM open interest by strike
From the closing options book · October 20, 2026 · updated after every close
At the October 20, 2026 close, STM options within 45 days held 29,948 calls and 18,921 puts in open interest, a put/call ratio of 0.63. The biggest call strike near the money was 45 and the biggest put strike 45.
STM open interest by strike, within 5% of the close
45 carried 2,615 calls and 45 carried 2,401 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 STM pages.
These are the October 20, 2026 closing numbers. Members see STM's map move live all session.
Common questions
29,948 calls and 18,921 puts within 45 days at the October 20, 2026 close.
45 near the money, with 2,615 contracts.
45 near the money, with 2,401 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.