OITracker Cboe delayed data

Contract OI history

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Oct 30, 2026 EXPIRATION

S $25.50 Call

S261030C00025500

Latest saved OI41Oct 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 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 41200 2026-10-02: 24 OI2026-10-05: 30 OI2026-10-06: 25 OI2026-10-07: 30 OI2026-10-08: 30 OI2026-10-09: 37 OI2026-10-13: 38 OI2026-10-14: 38 OI2026-10-15: 34 OI2026-10-16: 34 OI2026-10-21: 32 OI2026-10-23: 41 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, 2026Viewing41+9
Oct 21, 202632-2
Oct 16, 2026340
Oct 15, 202634-4
Oct 14, 2026380
Oct 13, 202638+1
Oct 09, 202637+7
Oct 08, 2026300
Oct 07, 202630+5
Oct 06, 202625-5
Oct 05, 202630+6
Oct 02, 202624No prior observation