ATI open interest by strike
From the closing options book · October 20, 2026 · updated after every close
At the October 20, 2026 close, ATI options within 45 days held 4,876 calls and 4,304 puts in open interest, a put/call ratio of 0.88. The biggest call strike near the money was 175 and the biggest put strike 190.
ATI open interest by strike, within 5% of the close
175 carried 535 calls and 190 carried 665 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 ATI pages.
These are the October 20, 2026 closing numbers. Members see ATI's map move live all session.
Common questions
4,876 calls and 4,304 puts within 45 days at the October 20, 2026 close.
175 near the money, with 535 contracts.
190 near the money, with 665 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.