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Contract OI history

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Nov 20, 2026 EXPIRATION

WM $180.00 Put

WM261120P00180000

Latest saved OI208Oct 23, 2026
Last change+71vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WM $180.00 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. 2081040 2026-10-02: 22 OI2026-10-05: 36 OI2026-10-06: 130 OI2026-10-07: 128 OI2026-10-08: 128 OI2026-10-09: 130 OI2026-10-14: 140 OI2026-10-15: 142 OI2026-10-16: 137 OI2026-10-21: 137 OI2026-10-23: 208 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, 2026208+71
Oct 21, 2026Viewing1370
Oct 16, 2026137-5
Oct 15, 2026142+2
Oct 14, 2026140+10
Oct 09, 2026130+2
Oct 08, 20261280
Oct 07, 2026128-2
Oct 06, 2026130+94
Oct 05, 202636+14
Oct 02, 202622No prior observation