OITracker Cboe delayed data

Contract OI history

Back to WST

Jun 17, 2027 EXPIRATION

WST $470.00 Call

WST270617C00470000

Latest saved OI351Oct 23, 2026
Last change+351vs previous saved observation
Saved market days4Oct 15, 2026 onwards
Daily open interest Hover a point for its date and OI
WST $470.00 call open interest history 4 saved observations from 2026-10-15 to 2026-10-23. Exact values and changes are listed in the table below. 3511750 2026-10-15: 0 OI2026-10-16: 0 OI2026-10-21: 0 OI2026-10-23: 351 OI Oct 15, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

WST contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026351+351
Oct 21, 2026Viewing00
Oct 16, 202600
Oct 15, 20260No prior observation