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Contract OI history

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Jun 17, 2027 EXPIRATION

WDC $440.00 Put

WDC270617P00440000

Latest saved OI251Oct 23, 2026
Last change+1vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $440.00 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. 2621310 2026-10-09: 262 OI2026-10-12: 261 OI2026-10-14: 261 OI2026-10-15: 261 OI2026-10-16: 261 OI2026-10-21: 250 OI2026-10-23: 251 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, 2026Viewing251+1
Oct 21, 2026250-11
Oct 16, 20262610
Oct 15, 20262610
Oct 14, 20262610
Oct 12, 2026261-1
Oct 09, 2026262No prior observation