CTAS open interest by strike
From the closing options book · October 20, 2026 · updated after every close
At the October 20, 2026 close, CTAS options within 45 days held 3,282 calls and 2,754 puts in open interest, a put/call ratio of 0.84. The biggest call strike near the money was 220 and the biggest put strike 210.
CTAS open interest by strike, within 5% of the close
220 carried 896 calls and 210 carried 141 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 CTAS pages.
These are the October 20, 2026 closing numbers. Members see CTAS's map move live all session.
Common questions
3,282 calls and 2,754 puts within 45 days at the October 20, 2026 close.
220 near the money, with 896 contracts.
210 near the money, with 141 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.