OITracker Cboe delayed data

Contract OI history

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Oct 23, 2026 EXPIRATION

S $25.50 Put

S261023P00025500

Latest saved OI1Oct 23, 2026
Last change-9vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
S $25.50 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. 1890 2026-10-02: 0 OI2026-10-05: 1 OI2026-10-06: 3 OI2026-10-07: 18 OI2026-10-08: 18 OI2026-10-09: 18 OI2026-10-13: 13 OI2026-10-14: 13 OI2026-10-15: 12 OI2026-10-16: 12 OI2026-10-21: 10 OI2026-10-23: 1 OI Oct 02, 2026Oct 23, 2026

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

S contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1-9
Oct 21, 202610-2
Oct 16, 2026120
Oct 15, 202612-1
Oct 14, 2026130
Oct 13, 202613-5
Oct 09, 2026180
Oct 08, 2026180
Oct 07, 202618+15
Oct 06, 20263+2
Oct 05, 20261+1
Oct 02, 20260No prior observation