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Contract OI history

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Dec 18, 2026 EXPIRATION

WM $240.00 Call

WM261218C00240000

Latest saved OI607Oct 23, 2026
Last change-164vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WM $240.00 call open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 7713850 2026-10-02: 724 OI2026-10-05: 724 OI2026-10-06: 725 OI2026-10-07: 730 OI2026-10-08: 730 OI2026-10-09: 732 OI2026-10-14: 731 OI2026-10-15: 726 OI2026-10-16: 736 OI2026-10-21: 771 OI2026-10-23: 607 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, 2026607-164
Oct 21, 2026Viewing771+35
Oct 16, 2026736+10
Oct 15, 2026726-5
Oct 14, 2026731-1
Oct 09, 2026732+2
Oct 08, 20267300
Oct 07, 2026730+5
Oct 06, 2026725+1
Oct 05, 20267240
Oct 02, 2026724No prior observation