MUB open interest by strike
From the closing options book · October 20, 2026 · updated after every close
At the October 20, 2026 close, MUB options within 45 days held 1,258 calls and 2,083 puts in open interest, a put/call ratio of 1.66. The biggest call strike near the money was 102 and the biggest put strike 100.
MUB open interest by strike, within 5% of the close
102 carried 902 calls and 100 carried 641 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 MUB pages.
These are the October 20, 2026 closing numbers. Members see MUB's map move live all session.
Common questions
1,258 calls and 2,083 puts within 45 days at the October 20, 2026 close.
102 near the money, with 902 contracts.
100 near the money, with 641 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.