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Contract OI history

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Mar 19, 2027 EXPIRATION

WDC $290.00 Put

WDC270319P00290000

Latest saved OI664Oct 23, 2026
Last change+14vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $290.00 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. 6643320 2026-10-09: 627 OI2026-10-12: 628 OI2026-10-14: 630 OI2026-10-15: 630 OI2026-10-16: 637 OI2026-10-21: 650 OI2026-10-23: 664 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, 2026Viewing664+14
Oct 21, 2026650+13
Oct 16, 2026637+7
Oct 15, 20266300
Oct 14, 2026630+2
Oct 12, 2026628+1
Oct 09, 2026627No prior observation