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Contract OI history

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Oct 23, 2026 EXPIRATION

WDC $340.00 Put

WDC261023P00340000

Latest saved OI1,945Oct 23, 2026
Last change+333vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $340.00 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. 1,9459720 2026-10-09: 289 OI2026-10-12: 297 OI2026-10-14: 332 OI2026-10-15: 344 OI2026-10-16: 368 OI2026-10-21: 1,612 OI2026-10-23: 1,945 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, 2026Viewing1,945+333
Oct 21, 20261,612+1,244
Oct 16, 2026368+24
Oct 15, 2026344+12
Oct 14, 2026332+35
Oct 12, 2026297+8
Oct 09, 2026289No prior observation