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Contract OI history

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Dec 18, 2026 EXPIRATION

WDC $380.00 Put

WDC261218P00380000

Latest saved OI684Oct 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 $380.00 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. 6853420 2026-10-09: 447 OI2026-10-12: 563 OI2026-10-14: 648 OI2026-10-15: 656 OI2026-10-16: 657 OI2026-10-21: 685 OI2026-10-23: 684 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, 2026Viewing684-1
Oct 21, 2026685+28
Oct 16, 2026657+1
Oct 15, 2026656+8
Oct 14, 2026648+85
Oct 12, 2026563+116
Oct 09, 2026447No prior observation