OITracker Cboe delayed data

Contract OI history

Back to DEFT

Dec 18, 2026 EXPIRATION

DEFT $500.00 Call

DEFT261218C00000500

Latest saved OI1,221Oct 23, 2026
Last change+1,214vs previous saved observation
Saved market days4Oct 15, 2026 onwards
Daily open interest Hover a point for its date and OI
DEFT $500.00 call open interest history 4 saved observations from 2026-10-15 to 2026-10-23. Exact values and changes are listed in the table below. 1,2216100 2026-10-15: 0 OI2026-10-16: 0 OI2026-10-20: 7 OI2026-10-23: 1,221 OI Oct 15, 2026Oct 23, 2026

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

DEFT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,221+1,214
Oct 20, 20267+7
Oct 16, 202600
Oct 15, 20260No prior observation