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Contract OI history

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Jun 17, 2027 EXPIRATION

WDC $420.00 Put

WDC270617P00420000

Latest saved OI591Oct 23, 2026
Last change+2vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $420.00 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. 5912950 2026-10-09: 558 OI2026-10-12: 562 OI2026-10-14: 577 OI2026-10-15: 582 OI2026-10-16: 584 OI2026-10-21: 589 OI2026-10-23: 591 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, 2026Viewing591+2
Oct 21, 2026589+5
Oct 16, 2026584+2
Oct 15, 2026582+5
Oct 14, 2026577+15
Oct 12, 2026562+4
Oct 09, 2026558No prior observation