MTSI open interest by strike
From the closing options book · October 20, 2026 · updated after every close
At the October 20, 2026 close, MTSI options within 45 days held 2,084 calls and 792 puts in open interest, a put/call ratio of 0.38. The biggest call strike near the money was 270 and the biggest put strike 270.
MTSI open interest by strike, within 5% of the close
270 carried 78 calls and 270 carried 131 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 MTSI pages.
These are the October 20, 2026 closing numbers. Members see MTSI's map move live all session.
Common questions
2,084 calls and 792 puts within 45 days at the October 20, 2026 close.
270 near the money, with 78 contracts.
270 near the money, with 131 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.