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Contract OI history

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Dec 18, 2026 EXPIRATION

WDC $270.00 Put

WDC261218P00270000

Latest saved OI670Oct 23, 2026
Last change+13vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $270.00 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. 6703350 2026-10-09: 373 OI2026-10-12: 374 OI2026-10-14: 603 OI2026-10-15: 603 OI2026-10-16: 605 OI2026-10-21: 657 OI2026-10-23: 670 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, 2026Viewing670+13
Oct 21, 2026657+52
Oct 16, 2026605+2
Oct 15, 20266030
Oct 14, 2026603+229
Oct 12, 2026374+1
Oct 09, 2026373No prior observation