OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

WM $200.00 Put

WM280121P00200000

Latest saved OI126Oct 23, 2026
Last change0vs 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. 127630 2026-10-02: 36 OI2026-10-05: 121 OI2026-10-06: 126 OI2026-10-07: 126 OI2026-10-08: 126 OI2026-10-09: 126 OI2026-10-14: 127 OI2026-10-15: 127 OI2026-10-16: 126 OI2026-10-21: 126 OI2026-10-23: 126 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, 20261260
Oct 21, 2026Viewing1260
Oct 16, 2026126-1
Oct 15, 20261270
Oct 14, 2026127+1
Oct 09, 20261260
Oct 08, 20261260
Oct 07, 20261260
Oct 06, 2026126+5
Oct 05, 2026121+85
Oct 02, 202636No prior observation