OITracker Cboe delayed data

Contract OI history

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Jun 16, 2028 EXPIRATION

WDC $290.00 Put

WDC280616P00290000

Latest saved OI133Oct 23, 2026
Last change+1vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $290.00 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. 133660 2026-10-09: 114 OI2026-10-12: 116 OI2026-10-14: 116 OI2026-10-15: 116 OI2026-10-16: 116 OI2026-10-21: 132 OI2026-10-23: 133 OI Oct 09, 2026Oct 23, 2026

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

WDC contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing133+1
Oct 21, 2026132+16
Oct 16, 20261160
Oct 15, 20261160
Oct 14, 20261160
Oct 12, 2026116+2
Oct 09, 2026114No prior observation