OITracker Cboe delayed data

Contract OI history

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Oct 30, 2026 EXPIRATION

T $25.50 Put

T261030P00025500

Latest saved OI15Oct 23, 2026
Last change-458vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
T $25.50 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. 4732360 2026-10-02: 426 OI2026-10-05: 426 OI2026-10-06: 428 OI2026-10-07: 428 OI2026-10-08: 428 OI2026-10-09: 428 OI2026-10-14: 427 OI2026-10-15: 428 OI2026-10-16: 440 OI2026-10-21: 473 OI2026-10-23: 15 OI Oct 02, 2026Oct 23, 2026

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

T contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing15-458
Oct 21, 2026473+33
Oct 16, 2026440+12
Oct 15, 2026428+1
Oct 14, 2026427-1
Oct 09, 20264280
Oct 08, 20264280
Oct 07, 20264280
Oct 06, 2026428+2
Oct 05, 20264260
Oct 02, 2026426No prior observation