FLY open interest by strike
From the closing options book · October 20, 2026 · updated after every close
At the October 20, 2026 close, FLY options within 45 days held 4,193 calls and 6,803 puts in open interest, a put/call ratio of 1.62. The biggest call strike near the money was 17 and the biggest put strike 16.
FLY open interest by strike, within 5% of the close
17 carried 175 calls and 16 carried 1,322 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 FLY pages.
These are the October 20, 2026 closing numbers. Members see FLY's map move live all session.
Common questions
4,193 calls and 6,803 puts within 45 days at the October 20, 2026 close.
17 near the money, with 175 contracts.
16 near the money, with 1,322 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.