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Contract OI history

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Mar 19, 2027 EXPIRATION

WM $170.00 Put

WM270319P00170000

Latest saved OI32Oct 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 $170.00 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. 35170 2026-10-02: 35 OI2026-10-05: 35 OI2026-10-06: 34 OI2026-10-07: 34 OI2026-10-08: 34 OI2026-10-09: 34 OI2026-10-14: 34 OI2026-10-15: 34 OI2026-10-16: 33 OI2026-10-21: 33 OI2026-10-23: 32 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, 202632-1
Oct 21, 2026Viewing330
Oct 16, 202633-1
Oct 15, 2026340
Oct 14, 2026340
Oct 09, 2026340
Oct 08, 2026340
Oct 07, 2026340
Oct 06, 202634-1
Oct 05, 2026350
Oct 02, 202635No prior observation