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Contract OI history

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Nov 20, 2026 EXPIRATION

CTAS $220.00 Call

CTAS261120C00220000

Latest saved OI847Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CTAS $220.00 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. 8474230 2026-10-09: 574 OI2026-10-13: 665 OI2026-10-14: 665 OI2026-10-15: 687 OI2026-10-16: 688 OI2026-10-21: 847 OI2026-10-23: 847 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, 2026Viewing8470
Oct 21, 2026847+159
Oct 16, 2026688+1
Oct 15, 2026687+22
Oct 14, 20266650
Oct 13, 2026665+91
Oct 09, 2026574No prior observation