OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

DELL $520.00 Put

DELL261218P00520000

Latest saved OI210Oct 23, 2026
Last change-1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
DELL $520.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2111050 2026-10-02: 151 OI2026-10-05: 149 OI2026-10-06: 169 OI2026-10-07: 158 OI2026-10-08: 158 OI2026-10-09: 171 OI2026-10-13: 177 OI2026-10-14: 177 OI2026-10-15: 189 OI2026-10-16: 195 OI2026-10-21: 211 OI2026-10-23: 210 OI Oct 02, 2026Oct 23, 2026

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

DELL contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing210-1
Oct 21, 2026211+16
Oct 16, 2026195+6
Oct 15, 2026189+12
Oct 14, 20261770
Oct 13, 2026177+6
Oct 09, 2026171+13
Oct 08, 20261580
Oct 07, 2026158-11
Oct 06, 2026169+20
Oct 05, 2026149-2
Oct 02, 2026151No prior observation