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Contract OI history

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Mar 19, 2027 EXPIRATION

WDC $390.00 Put

WDC270319P00390000

Latest saved OI258Oct 23, 2026
Last change+8vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $390.00 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. 2581290 2026-10-09: 251 OI2026-10-12: 251 OI2026-10-14: 245 OI2026-10-15: 247 OI2026-10-16: 246 OI2026-10-21: 250 OI2026-10-23: 258 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, 2026Viewing258+8
Oct 21, 2026250+4
Oct 16, 2026246-1
Oct 15, 2026247+2
Oct 14, 2026245-6
Oct 12, 20262510
Oct 09, 2026251No prior observation