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Contract OI history

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Nov 20, 2026 EXPIRATION

CWST $85.00 Call

CWST261120C00085000

Latest saved OI3Oct 23, 2026
Last change+1vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CWST $85.00 call open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 310 2026-10-09: 0 OI2026-10-13: 0 OI2026-10-14: 1 OI2026-10-16: 2 OI2026-10-20: 2 OI2026-10-23: 3 OI Oct 09, 2026Oct 23, 2026

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

CWST contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing3+1
Oct 20, 202620
Oct 16, 20262+1
Oct 14, 20261+1
Oct 13, 202600
Oct 09, 20260No prior observation