OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

KEYS $350.00 Put

KEYS261218P00350000

Latest saved OI76Oct 23, 2026
Last change-5vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
KEYS $350.00 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. 125620 2026-10-02: 125 OI2026-10-05: 122 OI2026-10-06: 122 OI2026-10-07: 122 OI2026-10-08: 122 OI2026-10-09: 117 OI2026-10-13: 117 OI2026-10-14: 117 OI2026-10-15: 117 OI2026-10-16: 89 OI2026-10-21: 81 OI2026-10-23: 76 OI Oct 02, 2026Oct 23, 2026

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

KEYS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing76-5
Oct 21, 202681-8
Oct 16, 202689-28
Oct 15, 20261170
Oct 14, 20261170
Oct 13, 20261170
Oct 09, 2026117-5
Oct 08, 20261220
Oct 07, 20261220
Oct 06, 20261220
Oct 05, 2026122-3
Oct 02, 2026125No prior observation