OITracker Cboe delayed data

Contract OI history

Back to WD

Dec 18, 2026 EXPIRATION

WD $40.00 Put

WD261218P00040000

Latest saved OI65Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WD $40.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 66330 2026-10-02: 64 OI2026-10-05: 64 OI2026-10-06: 64 OI2026-10-07: 64 OI2026-10-08: 64 OI2026-10-09: 64 OI2026-10-13: 64 OI2026-10-14: 64 OI2026-10-16: 66 OI2026-10-20: 65 OI2026-10-23: 65 OI Oct 02, 2026Oct 23, 2026

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

WD contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026650
Oct 20, 2026Viewing65-1
Oct 16, 202666+2
Oct 14, 2026640
Oct 13, 2026640
Oct 09, 2026640
Oct 08, 2026640
Oct 07, 2026640
Oct 06, 2026640
Oct 05, 2026640
Oct 02, 202664No prior observation