XBI open interest by strike
From the closing options book · October 20, 2026 · updated after every close
At the October 20, 2026 close, XBI options within 45 days held 35,697 calls and 109,229 puts in open interest, a put/call ratio of 3.06. The biggest call strike near the money was 155 and the biggest put strike 150.
XBI open interest by strike, within 5% of the close
155 carried 5,150 calls and 150 carried 7,846 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 XBI pages.
These are the October 20, 2026 closing numbers. Members see XBI's map move live all session.
Common questions
35,697 calls and 109,229 puts within 45 days at the October 20, 2026 close.
155 near the money, with 5,150 contracts.
150 near the money, with 7,846 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.