CPER open interest by strike
From the closing options book · October 20, 2026 · updated after every close
At the October 20, 2026 close, CPER options within 45 days held 4,068 calls and 3,402 puts in open interest, a put/call ratio of 0.84. The biggest call strike near the money was 40 and the biggest put strike 38.
CPER open interest by strike, within 5% of the close
40 carried 552 calls and 38 carried 793 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 CPER pages.
These are the October 20, 2026 closing numbers. Members see CPER's map move live all session.
Common questions
4,068 calls and 3,402 puts within 45 days at the October 20, 2026 close.
40 near the money, with 552 contracts.
38 near the money, with 793 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.