OITracker Cboe delayed data

Contract OI history

Back to WEST

Mar 19, 2027 EXPIRATION

WEST $15.00 Call

WEST270319C00015000

Latest saved OI46Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
WEST $15.00 call open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 46230 2026-10-08: 46 OI2026-10-09: 46 OI2026-10-13: 46 OI2026-10-14: 46 OI2026-10-16: 46 OI2026-10-21: 46 OI2026-10-23: 46 OI Oct 08, 2026Oct 23, 2026

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

WEST contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing460
Oct 21, 2026460
Oct 16, 2026460
Oct 14, 2026460
Oct 13, 2026460
Oct 09, 2026460
Oct 08, 202646No prior observation