OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

WM $200.00 Put

WM270115P00200000

Latest saved OI490Oct 23, 2026
Last change-4vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WM $200.00 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. 5262630 2026-10-02: 526 OI2026-10-05: 518 OI2026-10-06: 515 OI2026-10-07: 513 OI2026-10-08: 513 OI2026-10-09: 514 OI2026-10-14: 509 OI2026-10-15: 509 OI2026-10-16: 501 OI2026-10-21: 494 OI2026-10-23: 490 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, 2026Viewing490-4
Oct 21, 2026494-7
Oct 16, 2026501-8
Oct 15, 20265090
Oct 14, 2026509-5
Oct 09, 2026514+1
Oct 08, 20265130
Oct 07, 2026513-2
Oct 06, 2026515-3
Oct 05, 2026518-8
Oct 02, 2026526No prior observation