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Contract OI history

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Oct 23, 2026 EXPIRATION

WDC $420.00 Put

WDC261023P00420000

Latest saved OI202Oct 23, 2026
Last change-238vs 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. 4722360 2026-10-09: 219 OI2026-10-12: 472 OI2026-10-14: 464 OI2026-10-15: 460 OI2026-10-16: 456 OI2026-10-21: 440 OI2026-10-23: 202 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, 2026Viewing202-238
Oct 21, 2026440-16
Oct 16, 2026456-4
Oct 15, 2026460-4
Oct 14, 2026464-8
Oct 12, 2026472+253
Oct 09, 2026219No prior observation