COR open interest by strike
From the closing options book · October 20, 2026 · updated after every close
At the October 20, 2026 close, COR options within 45 days held 1,979 calls and 624 puts in open interest, a put/call ratio of 0.32. The biggest call strike near the money was 350 and the biggest put strike 330.
COR open interest by strike, within 5% of the close
350 carried 181 calls and 330 carried 24 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 COR pages.
These are the October 20, 2026 closing numbers. Members see COR's map move live all session.
Common questions
1,979 calls and 624 puts within 45 days at the October 20, 2026 close.
350 near the money, with 181 contracts.
330 near the money, with 24 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.