OITracker Cboe delayed data

Contract OI history

Back to COST

Jan 15, 2027 EXPIRATION

COST $820.00 Put

COST270115P00820000

Latest saved OI632Oct 23, 2026
Last change-3vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
COST $820.00 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. 6523260 2026-10-09: 652 OI2026-10-13: 639 OI2026-10-14: 639 OI2026-10-15: 638 OI2026-10-16: 635 OI2026-10-21: 635 OI2026-10-23: 632 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, 2026Viewing632-3
Oct 21, 20266350
Oct 16, 2026635-3
Oct 15, 2026638-1
Oct 14, 20266390
Oct 13, 2026639-13
Oct 09, 2026652No prior observation