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Contract OI history

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Nov 20, 2026 EXPIRATION

WM $210.00 Put

WM261120P00210000

Latest saved OI680Oct 23, 2026
Last change-4vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WM $210.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 6843420 2026-10-02: 395 OI2026-10-05: 402 OI2026-10-06: 456 OI2026-10-07: 507 OI2026-10-08: 507 OI2026-10-09: 575 OI2026-10-14: 576 OI2026-10-15: 642 OI2026-10-16: 620 OI2026-10-21: 684 OI2026-10-23: 680 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, 2026Viewing680-4
Oct 21, 2026684+64
Oct 16, 2026620-22
Oct 15, 2026642+66
Oct 14, 2026576+1
Oct 09, 2026575+68
Oct 08, 20265070
Oct 07, 2026507+51
Oct 06, 2026456+54
Oct 05, 2026402+7
Oct 02, 2026395No prior observation