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Contract OI history

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Oct 23, 2026 EXPIRATION

WDC $397.50 Call

WDC261023C00397500

Latest saved OI403Oct 23, 2026
Last change+195vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $397.50 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 4032010 2026-10-09: 36 OI2026-10-12: 38 OI2026-10-14: 39 OI2026-10-15: 139 OI2026-10-16: 153 OI2026-10-21: 208 OI2026-10-23: 403 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, 2026Viewing403+195
Oct 21, 2026208+55
Oct 16, 2026153+14
Oct 15, 2026139+100
Oct 14, 202639+1
Oct 12, 202638+2
Oct 09, 202636No prior observation