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Contract OI history

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Sep 17, 2027 EXPIRATION

WM $240.00 Call

WM270917C00240000

Latest saved OI321Oct 23, 2026
Last change+3vs 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. 3211600 2026-10-02: 1 OI2026-10-05: 1 OI2026-10-06: 5 OI2026-10-07: 5 OI2026-10-08: 5 OI2026-10-09: 9 OI2026-10-14: 12 OI2026-10-15: 12 OI2026-10-16: 318 OI2026-10-21: 318 OI2026-10-23: 321 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, 2026Viewing321+3
Oct 21, 20263180
Oct 16, 2026318+306
Oct 15, 2026120
Oct 14, 202612+3
Oct 09, 20269+4
Oct 08, 202650
Oct 07, 202650
Oct 06, 20265+4
Oct 05, 202610
Oct 02, 20261No prior observation