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Contract OI history

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Apr 16, 2027 EXPIRATION

WDC $320.00 Put

WDC270416P00320000

Latest saved OI177Oct 23, 2026
Last change-1vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $320.00 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. 178890 2026-10-09: 173 OI2026-10-12: 173 OI2026-10-14: 175 OI2026-10-15: 174 OI2026-10-16: 178 OI2026-10-21: 178 OI2026-10-23: 177 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, 2026Viewing177-1
Oct 21, 20261780
Oct 16, 2026178+4
Oct 15, 2026174-1
Oct 14, 2026175+2
Oct 12, 20261730
Oct 09, 2026173No prior observation