OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

WM $210.00 Put

WM261218P00210000

Latest saved OI465Oct 23, 2026
Last change+23vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WM $210.00 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. 4652320 2026-10-02: 388 OI2026-10-05: 416 OI2026-10-06: 450 OI2026-10-07: 449 OI2026-10-08: 449 OI2026-10-09: 445 OI2026-10-14: 465 OI2026-10-15: 414 OI2026-10-16: 393 OI2026-10-21: 442 OI2026-10-23: 465 OI Oct 02, 2026Oct 23, 2026

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

WM contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing465+23
Oct 21, 2026442+49
Oct 16, 2026393-21
Oct 15, 2026414-51
Oct 14, 2026465+20
Oct 09, 2026445-4
Oct 08, 20264490
Oct 07, 2026449-1
Oct 06, 2026450+34
Oct 05, 2026416+28
Oct 02, 2026388No prior observation