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Contract OI history

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Mar 19, 2027 EXPIRATION

WDC $440.00 Put

WDC270319P00440000

Latest saved OI341Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $440.00 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. 3411700 2026-10-09: 331 OI2026-10-12: 330 OI2026-10-14: 331 OI2026-10-15: 331 OI2026-10-16: 336 OI2026-10-21: 341 OI2026-10-23: 341 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, 2026Viewing3410
Oct 21, 2026341+5
Oct 16, 2026336+5
Oct 15, 20263310
Oct 14, 2026331+1
Oct 12, 2026330-1
Oct 09, 2026331No prior observation