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Contract OI history

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Dec 18, 2026 EXPIRATION

WDC $550.00 Put

WDC261218P00550000

Latest saved OI103Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $550.00 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. 108540 2026-10-09: 108 OI2026-10-12: 108 OI2026-10-14: 107 OI2026-10-15: 106 OI2026-10-16: 108 OI2026-10-21: 103 OI2026-10-23: 103 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, 2026Viewing1030
Oct 21, 2026103-5
Oct 16, 2026108+2
Oct 15, 2026106-1
Oct 14, 2026107-1
Oct 12, 20261080
Oct 09, 2026108No prior observation