OITracker Cboe delayed data

Contract OI history

Back to COST

Dec 18, 2026 EXPIRATION

COST $1020.00 Call

COST261218C01020000

Latest saved OI655Oct 23, 2026
Last change-5vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
COST $1020.00 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 6603300 2026-10-09: 590 OI2026-10-13: 612 OI2026-10-14: 612 OI2026-10-15: 613 OI2026-10-16: 655 OI2026-10-21: 660 OI2026-10-23: 655 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, 2026Viewing655-5
Oct 21, 2026660+5
Oct 16, 2026655+42
Oct 15, 2026613+1
Oct 14, 20266120
Oct 13, 2026612+22
Oct 09, 2026590No prior observation