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Contract OI history

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Oct 30, 2026 EXPIRATION

WDC $400.00 Put

WDC261030P00400000

Latest saved OI754Oct 23, 2026
Last change+26vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $400.00 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. 7543770 2026-10-09: 648 OI2026-10-12: 645 OI2026-10-14: 617 OI2026-10-15: 614 OI2026-10-16: 718 OI2026-10-21: 728 OI2026-10-23: 754 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, 2026Viewing754+26
Oct 21, 2026728+10
Oct 16, 2026718+104
Oct 15, 2026614-3
Oct 14, 2026617-28
Oct 12, 2026645-3
Oct 09, 2026648No prior observation