OITracker Cboe delayed data

Contract OI history

Back to OPEN

Dec 18, 2026 EXPIRATION

OPEN $4.00 Put

OPEN261218P00004000

Latest saved OI1,478Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
OPEN $4.00 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. 1,4887440 2026-10-09: 1,488 OI2026-10-13: 1,488 OI2026-10-14: 1,488 OI2026-10-15: 1,488 OI2026-10-16: 1,488 OI2026-10-21: 1,478 OI2026-10-23: 1,478 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

OPEN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,4780
Oct 21, 20261,478-10
Oct 16, 20261,4880
Oct 15, 20261,4880
Oct 14, 20261,4880
Oct 13, 20261,4880
Oct 09, 20261,488No prior observation