ACI open interest by strike
From the closing options book · October 20, 2026 · updated after every close
At the October 20, 2026 close, ACI options within 45 days held 4,935 calls and 1,679 puts in open interest, a put/call ratio of 0.34. The biggest call strike near the money was 13 and the biggest put strike 13.
ACI open interest by strike, within 5% of the close
13 carried 2,331 calls and 13 carried 354 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 ACI pages.
These are the October 20, 2026 closing numbers. Members see ACI's map move live all session.
Common questions
4,935 calls and 1,679 puts within 45 days at the October 20, 2026 close.
13 near the money, with 2,331 contracts.
13 near the money, with 354 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.