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Contract OI history

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Jan 21, 2028 EXPIRATION

WM $250.00 Call

WM280121C00250000

Latest saved OI141Oct 23, 2026
Last change+1vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WM $250.00 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. 141700 2026-10-02: 135 OI2026-10-05: 135 OI2026-10-06: 130 OI2026-10-07: 130 OI2026-10-08: 130 OI2026-10-09: 130 OI2026-10-14: 131 OI2026-10-15: 131 OI2026-10-16: 131 OI2026-10-21: 140 OI2026-10-23: 141 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, 2026141+1
Oct 21, 2026Viewing140+9
Oct 16, 20261310
Oct 15, 20261310
Oct 14, 2026131+1
Oct 09, 20261300
Oct 08, 20261300
Oct 07, 20261300
Oct 06, 2026130-5
Oct 05, 20261350
Oct 02, 2026135No prior observation