OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

DEFT $500.00 Put

DEFT270115P00000500

Latest saved OI397Oct 23, 2026
Last change0vs 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. 3971980 2026-10-09: 253 OI2026-10-13: 303 OI2026-10-15: 362 OI2026-10-16: 362 OI2026-10-20: 397 OI2026-10-23: 397 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, 2026Viewing3970
Oct 20, 2026397+35
Oct 16, 20263620
Oct 15, 2026362+59
Oct 13, 2026303+50
Oct 09, 2026253No prior observation