OITracker Cboe delayed data

Contract OI history

Back to COST

Oct 23, 2026 EXPIRATION

COST $760.00 Put

COST261023P00760000

Latest saved OI518Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
COST $760.00 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. 5182590 2026-10-09: 428 OI2026-10-13: 450 OI2026-10-14: 450 OI2026-10-15: 450 OI2026-10-16: 451 OI2026-10-21: 518 OI2026-10-23: 518 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, 2026Viewing5180
Oct 21, 2026518+67
Oct 16, 2026451+1
Oct 15, 20264500
Oct 14, 20264500
Oct 13, 2026450+22
Oct 09, 2026428No prior observation