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Contract OI history

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Oct 23, 2026 EXPIRATION

WDC $355.00 Put

WDC261023P00355000

Latest saved OI274Oct 23, 2026
Last change+22vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $355.00 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. 2741370 2026-10-09: 162 OI2026-10-12: 174 OI2026-10-14: 217 OI2026-10-15: 240 OI2026-10-16: 225 OI2026-10-21: 252 OI2026-10-23: 274 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, 2026Viewing274+22
Oct 21, 2026252+27
Oct 16, 2026225-15
Oct 15, 2026240+23
Oct 14, 2026217+43
Oct 12, 2026174+12
Oct 09, 2026162No prior observation