OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

U $25.00 Put

U280121P00025000

Latest saved OI553Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
U $25.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 5532760 2026-10-02: 543 OI2026-10-05: 543 OI2026-10-06: 553 OI2026-10-07: 553 OI2026-10-08: 553 OI2026-10-09: 553 OI2026-10-14: 553 OI2026-10-15: 553 OI2026-10-16: 553 OI2026-10-21: 553 OI2026-10-23: 553 OI Oct 02, 2026Oct 23, 2026

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

U contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20265530
Oct 21, 2026Viewing5530
Oct 16, 20265530
Oct 15, 20265530
Oct 14, 20265530
Oct 09, 20265530
Oct 08, 20265530
Oct 07, 20265530
Oct 06, 2026553+10
Oct 05, 20265430
Oct 02, 2026543No prior observation