OITracker Cboe delayed data

Contract OI history

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Mar 19, 2027 EXPIRATION

WM $190.00 Put

WM270319P00190000

Latest saved OI193Oct 23, 2026
Last change+5vs 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. 193960 2026-10-02: 191 OI2026-10-05: 191 OI2026-10-06: 190 OI2026-10-07: 191 OI2026-10-08: 191 OI2026-10-09: 192 OI2026-10-14: 192 OI2026-10-15: 193 OI2026-10-16: 189 OI2026-10-21: 188 OI2026-10-23: 193 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, 2026193+5
Oct 21, 2026Viewing188-1
Oct 16, 2026189-4
Oct 15, 2026193+1
Oct 14, 20261920
Oct 09, 2026192+1
Oct 08, 20261910
Oct 07, 2026191+1
Oct 06, 2026190-1
Oct 05, 20261910
Oct 02, 2026191No prior observation