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Contract OI history

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Dec 18, 2026 EXPIRATION

WM $220.00 Call

WM261218C00220000

Latest saved OI299Oct 23, 2026
Last change-20vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WM $220.00 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. 3191590 2026-10-02: 233 OI2026-10-05: 237 OI2026-10-06: 243 OI2026-10-07: 246 OI2026-10-08: 246 OI2026-10-09: 261 OI2026-10-14: 240 OI2026-10-15: 252 OI2026-10-16: 228 OI2026-10-21: 319 OI2026-10-23: 299 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, 2026299-20
Oct 21, 2026Viewing319+91
Oct 16, 2026228-24
Oct 15, 2026252+12
Oct 14, 2026240-21
Oct 09, 2026261+15
Oct 08, 20262460
Oct 07, 2026246+3
Oct 06, 2026243+6
Oct 05, 2026237+4
Oct 02, 2026233No prior observation