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Contract OI history

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Mar 19, 2027 EXPIRATION

WM $230.00 Put

WM270319P00230000

Latest saved OI184Oct 23, 2026
Last change+12vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WM $230.00 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. 184920 2026-10-02: 120 OI2026-10-05: 121 OI2026-10-06: 121 OI2026-10-07: 121 OI2026-10-08: 121 OI2026-10-09: 121 OI2026-10-14: 121 OI2026-10-15: 121 OI2026-10-16: 121 OI2026-10-21: 172 OI2026-10-23: 184 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, 2026184+12
Oct 21, 2026Viewing172+51
Oct 16, 20261210
Oct 15, 20261210
Oct 14, 20261210
Oct 09, 20261210
Oct 08, 20261210
Oct 07, 20261210
Oct 06, 20261210
Oct 05, 2026121+1
Oct 02, 2026120No prior observation