OITracker Cboe delayed data

Contract OI history

Back to WM

Dec 18, 2026 EXPIRATION

WM $190.00 Put

WM261218P00190000

Latest saved OI257Oct 23, 2026
Last change-3vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WM $190.00 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. 3411700 2026-10-02: 332 OI2026-10-05: 332 OI2026-10-06: 333 OI2026-10-07: 335 OI2026-10-08: 335 OI2026-10-09: 335 OI2026-10-14: 341 OI2026-10-15: 340 OI2026-10-16: 341 OI2026-10-21: 260 OI2026-10-23: 257 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, 2026257-3
Oct 21, 2026Viewing260-81
Oct 16, 2026341+1
Oct 15, 2026340-1
Oct 14, 2026341+6
Oct 09, 20263350
Oct 08, 20263350
Oct 07, 2026335+2
Oct 06, 2026333+1
Oct 05, 20263320
Oct 02, 2026332No prior observation