OITracker Cboe delayed data

Contract OI history

Back to WDC

Jan 15, 2027 EXPIRATION

WDC $340.00 Put

WDC270115P00340000

Latest saved OI536Oct 23, 2026
Last change-25vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $340.00 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. 5792890 2026-10-09: 415 OI2026-10-12: 429 OI2026-10-14: 578 OI2026-10-15: 579 OI2026-10-16: 515 OI2026-10-21: 561 OI2026-10-23: 536 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, 2026Viewing536-25
Oct 21, 2026561+46
Oct 16, 2026515-64
Oct 15, 2026579+1
Oct 14, 2026578+149
Oct 12, 2026429+14
Oct 09, 2026415No prior observation