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Contract OI history

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Dec 18, 2026 EXPIRATION

WDC $370.00 Put

WDC261218P00370000

Latest saved OI990Oct 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 $370.00 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. 9904950 2026-10-09: 692 OI2026-10-12: 689 OI2026-10-14: 953 OI2026-10-15: 960 OI2026-10-16: 947 OI2026-10-21: 989 OI2026-10-23: 990 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, 2026Viewing990+1
Oct 21, 2026989+42
Oct 16, 2026947-13
Oct 15, 2026960+7
Oct 14, 2026953+264
Oct 12, 2026689-3
Oct 09, 2026692No prior observation