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Contract OI history

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Jun 17, 2027 EXPIRATION

WDC $320.00 Put

WDC270617P00320000

Latest saved OI567Oct 23, 2026
Last change+4vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $320.00 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. 5722860 2026-10-09: 550 OI2026-10-12: 564 OI2026-10-14: 571 OI2026-10-15: 572 OI2026-10-16: 572 OI2026-10-21: 563 OI2026-10-23: 567 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, 2026Viewing567+4
Oct 21, 2026563-9
Oct 16, 20265720
Oct 15, 2026572+1
Oct 14, 2026571+7
Oct 12, 2026564+14
Oct 09, 2026550No prior observation