OITracker Cboe delayed data

Contract OI history

Back to COST

Jan 15, 2027 EXPIRATION

COST $680.00 Put

COST270115P00680000

Latest saved OI306Oct 23, 2026
Last change+1vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
COST $680.00 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. 3061530 2026-10-09: 301 OI2026-10-13: 302 OI2026-10-14: 302 OI2026-10-15: 303 OI2026-10-16: 303 OI2026-10-21: 305 OI2026-10-23: 306 OI Oct 09, 2026Oct 23, 2026

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

COST contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing306+1
Oct 21, 2026305+2
Oct 16, 20263030
Oct 15, 2026303+1
Oct 14, 20263020
Oct 13, 2026302+1
Oct 09, 2026301No prior observation