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Contract OI history

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Dec 18, 2026 EXPIRATION

WM $260.00 Call

WM261218C00260000

Latest saved OI266Oct 23, 2026
Last change+43vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WM $260.00 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. 2661330 2026-10-02: 221 OI2026-10-05: 221 OI2026-10-06: 221 OI2026-10-07: 221 OI2026-10-08: 221 OI2026-10-09: 221 OI2026-10-14: 222 OI2026-10-15: 222 OI2026-10-16: 222 OI2026-10-21: 223 OI2026-10-23: 266 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, 2026Viewing266+43
Oct 21, 2026223+1
Oct 16, 20262220
Oct 15, 20262220
Oct 14, 2026222+1
Oct 09, 20262210
Oct 08, 20262210
Oct 07, 20262210
Oct 06, 20262210
Oct 05, 20262210
Oct 02, 2026221No prior observation