CSCO open interest by strike
From the closing options book · October 20, 2026 · updated after every close
At the October 20, 2026 close, CSCO options within 45 days held 58,464 calls and 53,729 puts in open interest, a put/call ratio of 0.92. The biggest call strike near the money was 110 and the biggest put strike 105.
CSCO open interest by strike, within 5% of the close
110 carried 6,214 calls and 105 carried 9,883 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 CSCO pages.
These are the October 20, 2026 closing numbers. Members see CSCO's map move live all session.
Common questions
58,464 calls and 53,729 puts within 45 days at the October 20, 2026 close.
110 near the money, with 6,214 contracts.
105 near the money, with 9,883 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.