BOX open interest by strike
From the closing options book · October 20, 2026 · updated after every close
At the October 20, 2026 close, BOX options within 45 days held 2,236 calls and 1,257 puts in open interest, a put/call ratio of 0.56. The biggest call strike near the money was 42 and the biggest put strike 40.
BOX open interest by strike, within 5% of the close
42 carried 621 calls and 40 carried 237 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 BOX pages.
These are the October 20, 2026 closing numbers. Members see BOX's map move live all session.
Common questions
2,236 calls and 1,257 puts within 45 days at the October 20, 2026 close.
42 near the money, with 621 contracts.
40 near the money, with 237 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.