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Contract OI history

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Dec 18, 2026 EXPIRATION

WDC $350.00 Put

WDC261218P00350000

Latest saved OI1,210Oct 23, 2026
Last change+19vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $350.00 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. 1,2106050 2026-10-09: 1,138 OI2026-10-12: 1,137 OI2026-10-14: 1,180 OI2026-10-15: 1,168 OI2026-10-16: 1,188 OI2026-10-21: 1,191 OI2026-10-23: 1,210 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, 2026Viewing1,210+19
Oct 21, 20261,191+3
Oct 16, 20261,188+20
Oct 15, 20261,168-12
Oct 14, 20261,180+43
Oct 12, 20261,137-1
Oct 09, 20261,138No prior observation