OITracker Cboe delayed data

Contract OI history

Back to DEFT

Jan 21, 2028 EXPIRATION

DEFT $500.00 Put

DEFT280121P00000500

Latest saved OI1,042Oct 23, 2026
Last change+5vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
DEFT $500.00 put open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 1,0425210 2026-10-09: 1,036 OI2026-10-13: 1,036 OI2026-10-15: 1,036 OI2026-10-16: 1,037 OI2026-10-20: 1,037 OI2026-10-23: 1,042 OI Oct 09, 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, 2026Viewing1,042+5
Oct 20, 20261,0370
Oct 16, 20261,037+1
Oct 15, 20261,0360
Oct 13, 20261,0360
Oct 09, 20261,036No prior observation