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Contract OI history

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Dec 18, 2026 EXPIRATION

WDC $310.00 Put

WDC261218P00310000

Latest saved OI374Oct 23, 2026
Last change+32vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $310.00 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. 3741870 2026-10-09: 271 OI2026-10-12: 271 OI2026-10-14: 317 OI2026-10-15: 318 OI2026-10-16: 325 OI2026-10-21: 342 OI2026-10-23: 374 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, 2026Viewing374+32
Oct 21, 2026342+17
Oct 16, 2026325+7
Oct 15, 2026318+1
Oct 14, 2026317+46
Oct 12, 20262710
Oct 09, 2026271No prior observation