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Contract OI history

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Oct 23, 2026 EXPIRATION

WDC $342.50 Put

WDC261023P00342500

Latest saved OI137Oct 23, 2026
Last change+12vs previous saved observation
Saved market days5Oct 14, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $342.50 put open interest history 5 saved observations from 2026-10-14 to 2026-10-23. Exact values and changes are listed in the table below. 137680 2026-10-14: 0 OI2026-10-15: 1 OI2026-10-16: 41 OI2026-10-21: 125 OI2026-10-23: 137 OI Oct 14, 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, 2026Viewing137+12
Oct 21, 2026125+84
Oct 16, 202641+40
Oct 15, 20261+1
Oct 14, 20260No prior observation