OITracker Cboe delayed data

Contract OI history

Back to COST

Feb 19, 2027 EXPIRATION

COST $1200.00 Call

COST270219C01200000

Latest saved OI648Oct 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 $1200.00 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. 1,0005000 2026-10-09: 985 OI2026-10-13: 1,000 OI2026-10-14: 1,000 OI2026-10-15: 645 OI2026-10-16: 645 OI2026-10-21: 647 OI2026-10-23: 648 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, 2026Viewing648+1
Oct 21, 2026647+2
Oct 16, 20266450
Oct 15, 2026645-355
Oct 14, 20261,0000
Oct 13, 20261,000+15
Oct 09, 2026985No prior observation