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Contract OI history

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Jan 15, 2027 EXPIRATION

CTAS $240.00 Call

CTAS270115C00240000

Latest saved OI435Oct 23, 2026
Last change+1vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CTAS $240.00 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 4352170 2026-10-09: 401 OI2026-10-13: 433 OI2026-10-14: 433 OI2026-10-15: 433 OI2026-10-16: 433 OI2026-10-21: 434 OI2026-10-23: 435 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

CTAS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing435+1
Oct 21, 2026434+1
Oct 16, 20264330
Oct 15, 20264330
Oct 14, 20264330
Oct 13, 2026433+32
Oct 09, 2026401No prior observation