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Contract OI history

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Oct 30, 2026 EXPIRATION

WDC $340.00 Put

WDC261030P00340000

Latest saved OI505Oct 23, 2026
Last change+136vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $340.00 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. 5052520 2026-10-09: 197 OI2026-10-12: 216 OI2026-10-14: 224 OI2026-10-15: 217 OI2026-10-16: 308 OI2026-10-21: 369 OI2026-10-23: 505 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, 2026Viewing505+136
Oct 21, 2026369+61
Oct 16, 2026308+91
Oct 15, 2026217-7
Oct 14, 2026224+8
Oct 12, 2026216+19
Oct 09, 2026197No prior observation