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Contract OI history

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Mar 19, 2027 EXPIRATION

WDC $370.00 Put

WDC270319P00370000

Latest saved OI270Oct 23, 2026
Last change+2vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $370.00 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. 2701350 2026-10-09: 247 OI2026-10-12: 247 OI2026-10-14: 249 OI2026-10-15: 265 OI2026-10-16: 261 OI2026-10-21: 268 OI2026-10-23: 270 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, 2026Viewing270+2
Oct 21, 2026268+7
Oct 16, 2026261-4
Oct 15, 2026265+16
Oct 14, 2026249+2
Oct 12, 20262470
Oct 09, 2026247No prior observation