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Contract OI history

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Oct 30, 2026 EXPIRATION

WDC $387.50 Put

WDC261030P00387500

Latest saved OI38Oct 23, 2026
Last change+6vs previous saved observation
Saved market days6Oct 12, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $387.50 put open interest history 6 saved observations from 2026-10-12 to 2026-10-23. Exact values and changes are listed in the table below. 38190 2026-10-12: 0 OI2026-10-14: 24 OI2026-10-15: 32 OI2026-10-16: 33 OI2026-10-21: 32 OI2026-10-23: 38 OI Oct 12, 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, 2026Viewing38+6
Oct 21, 202632-1
Oct 16, 202633+1
Oct 15, 202632+8
Oct 14, 202624+24
Oct 12, 20260No prior observation