MRSH open interest by strike
From the closing options book · October 20, 2026 · updated after every close
At the October 20, 2026 close, MRSH options within 45 days held 887 calls and 1,660 puts in open interest, a put/call ratio of 1.87. The biggest call strike near the money was 190 and the biggest put strike 185.
MRSH open interest by strike, within 5% of the close
190 carried 252 calls and 185 carried 1,358 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 MRSH pages.
These are the October 20, 2026 closing numbers. Members see MRSH's map move live all session.
Common questions
887 calls and 1,660 puts within 45 days at the October 20, 2026 close.
190 near the money, with 252 contracts.
185 near the money, with 1,358 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.