OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

WDC $300.00 Put

WDC280121P00300000

Latest saved OI1,020Oct 23, 2026
Last change+2vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $300.00 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. 1,0205100 2026-10-09: 750 OI2026-10-12: 748 OI2026-10-14: 792 OI2026-10-15: 804 OI2026-10-16: 998 OI2026-10-21: 1,018 OI2026-10-23: 1,020 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, 2026Viewing1,020+2
Oct 21, 20261,018+20
Oct 16, 2026998+194
Oct 15, 2026804+12
Oct 14, 2026792+44
Oct 12, 2026748-2
Oct 09, 2026750No prior observation