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Contract OI history

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Jan 15, 2027 EXPIRATION

WDC $640.00 Put

WDC270115P00640000

Latest saved OI84Oct 23, 2026
Last change-30vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $640.00 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. 115570 2026-10-09: 115 OI2026-10-12: 115 OI2026-10-14: 115 OI2026-10-15: 115 OI2026-10-16: 115 OI2026-10-21: 114 OI2026-10-23: 84 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, 2026Viewing84-30
Oct 21, 2026114-1
Oct 16, 20261150
Oct 15, 20261150
Oct 14, 20261150
Oct 12, 20261150
Oct 09, 2026115No prior observation