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Contract OI history

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Jun 16, 2028 EXPIRATION

WDC $400.00 Put

WDC280616P00400000

Latest saved OI115Oct 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 $400.00 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. 115570 2026-10-09: 113 OI2026-10-12: 114 OI2026-10-14: 114 OI2026-10-15: 114 OI2026-10-16: 115 OI2026-10-21: 115 OI2026-10-23: 115 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, 2026Viewing1150
Oct 21, 20261150
Oct 16, 2026115+1
Oct 15, 20261140
Oct 14, 20261140
Oct 12, 2026114+1
Oct 09, 2026113No prior observation