OITracker Cboe delayed data

Contract OI history

Back to CTAS

Jan 15, 2027 EXPIRATION

CTAS $190.00 Put

CTAS270115P00190000

Latest saved OI284Oct 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 $190.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 2841420 2026-10-09: 274 OI2026-10-13: 281 OI2026-10-14: 281 OI2026-10-15: 281 OI2026-10-16: 283 OI2026-10-21: 283 OI2026-10-23: 284 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, 2026Viewing284+1
Oct 21, 20262830
Oct 16, 2026283+2
Oct 15, 20262810
Oct 14, 20262810
Oct 13, 2026281+7
Oct 09, 2026274No prior observation