OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

WMT $40.00 Put

WMT270115P00040000

Latest saved OI1,375Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WMT $40.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 1,3756870 2026-10-09: 1,375 OI2026-10-12: 1,375 OI2026-10-14: 1,375 OI2026-10-15: 1,375 OI2026-10-16: 1,375 OI2026-10-21: 1,375 OI2026-10-23: 1,375 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

WMT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,3750
Oct 21, 20261,3750
Oct 16, 20261,3750
Oct 15, 20261,3750
Oct 14, 20261,3750
Oct 12, 20261,3750
Oct 09, 20261,375No prior observation