ALGN open interest by strike
From the closing options book · October 20, 2026 · updated after every close
At the October 20, 2026 close, ALGN options within 45 days held 1,544 calls and 2,758 puts in open interest, a put/call ratio of 1.79. The biggest call strike near the money was 155 and the biggest put strike 145.
ALGN open interest by strike, within 5% of the close
155 carried 561 calls and 145 carried 357 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 ALGN pages.
These are the October 20, 2026 closing numbers. Members see ALGN's map move live all session.
Common questions
1,544 calls and 2,758 puts within 45 days at the October 20, 2026 close.
155 near the money, with 561 contracts.
145 near the money, with 357 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.