BOIL open interest by strike
From the closing options book · October 20, 2026 · updated after every close
At the October 20, 2026 close, BOIL options within 45 days held 8,958 calls and 11,000 puts in open interest, a put/call ratio of 1.23. The biggest call strike near the money was 20 and the biggest put strike 19.
BOIL open interest by strike, within 5% of the close
20 carried 1,713 calls and 19 carried 1,361 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 BOIL pages.
These are the October 20, 2026 closing numbers. Members see BOIL's map move live all session.
Common questions
8,958 calls and 11,000 puts within 45 days at the October 20, 2026 close.
20 near the money, with 1,713 contracts.
19 near the money, with 1,361 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.