OITracker Cboe delayed data

Contract OI history

Back to COST

Feb 19, 2027 EXPIRATION

COST $860.00 Put

COST270219P00860000

Latest saved OI109Oct 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 $860.00 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. 112560 2026-10-09: 107 OI2026-10-13: 108 OI2026-10-14: 108 OI2026-10-15: 108 OI2026-10-16: 112 OI2026-10-21: 109 OI2026-10-23: 109 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, 2026Viewing1090
Oct 21, 2026109-3
Oct 16, 2026112+4
Oct 15, 20261080
Oct 14, 20261080
Oct 13, 2026108+1
Oct 09, 2026107No prior observation