TSM open interest by strike
From the closing options book · October 20, 2026 · updated after every close
At the October 20, 2026 close, TSM options within 45 days held 153,918 calls and 147,269 puts in open interest, a put/call ratio of 0.96. The biggest call strike near the money was 430 and the biggest put strike 410.
TSM open interest by strike, within 5% of the close
430 carried 9,360 calls and 410 carried 9,651 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 TSM pages.
These are the October 20, 2026 closing numbers. Members see TSM's map move live all session.
Common questions
153,918 calls and 147,269 puts within 45 days at the October 20, 2026 close.
430 near the money, with 9,360 contracts.
410 near the money, with 9,651 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.