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Contract OI history

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Dec 18, 2026 EXPIRATION

WM $200.00 Put

WM261218P00200000

Latest saved OI701Oct 23, 2026
Last change-4vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WM $200.00 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. 7943970 2026-10-02: 761 OI2026-10-05: 784 OI2026-10-06: 789 OI2026-10-07: 788 OI2026-10-08: 788 OI2026-10-09: 783 OI2026-10-14: 794 OI2026-10-15: 792 OI2026-10-16: 787 OI2026-10-21: 705 OI2026-10-23: 701 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, 2026701-4
Oct 21, 2026Viewing705-82
Oct 16, 2026787-5
Oct 15, 2026792-2
Oct 14, 2026794+11
Oct 09, 2026783-5
Oct 08, 20267880
Oct 07, 2026788-1
Oct 06, 2026789+5
Oct 05, 2026784+23
Oct 02, 2026761No prior observation