GM open interest by strike
From the closing options book · October 20, 2026 · updated after every close
At the October 20, 2026 close, GM options within 45 days held 28,442 calls and 26,228 puts in open interest, a put/call ratio of 0.92. The biggest call strike near the money was 80 and the biggest put strike 78.
GM open interest by strike, within 5% of the close
80 carried 4,792 calls and 78 carried 2,855 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 GM pages.
These are the October 20, 2026 closing numbers. Members see GM's map move live all session.
Common questions
28,442 calls and 26,228 puts within 45 days at the October 20, 2026 close.
80 near the money, with 4,792 contracts.
78 near the money, with 2,855 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.