OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

KEYS $290.00 Put

KEYS261218P00290000

Latest saved OI186Oct 23, 2026
Last change+20vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
KEYS $290.00 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. 186930 2026-10-02: 42 OI2026-10-05: 42 OI2026-10-06: 42 OI2026-10-07: 42 OI2026-10-08: 42 OI2026-10-09: 42 OI2026-10-13: 42 OI2026-10-14: 46 OI2026-10-15: 46 OI2026-10-16: 164 OI2026-10-21: 166 OI2026-10-23: 186 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, 2026Viewing186+20
Oct 21, 2026166+2
Oct 16, 2026164+118
Oct 15, 2026460
Oct 14, 202646+4
Oct 13, 2026420
Oct 09, 2026420
Oct 08, 2026420
Oct 07, 2026420
Oct 06, 2026420
Oct 05, 2026420
Oct 02, 202642No prior observation