RMBS open interest by strike
From the closing options book · October 20, 2026 · updated after every close
At the October 20, 2026 close, RMBS options within 45 days held 2,994 calls and 3,515 puts in open interest, a put/call ratio of 1.17. The biggest call strike near the money was 90 and the biggest put strike 95.
RMBS open interest by strike, within 5% of the close
90 carried 364 calls and 95 carried 333 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 RMBS pages.
These are the October 20, 2026 closing numbers. Members see RMBS's map move live all session.
Common questions
2,994 calls and 3,515 puts within 45 days at the October 20, 2026 close.
90 near the money, with 364 contracts.
95 near the money, with 333 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.