OITracker Cboe delayed data

Contract OI history

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Oct 30, 2026 EXPIRATION

T $20.50 Put

T261030P00020500

Latest saved OI159Oct 23, 2026
Last change+124vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
T $20.50 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. 159790 2026-10-02: 0 OI2026-10-05: 0 OI2026-10-06: 0 OI2026-10-07: 0 OI2026-10-08: 0 OI2026-10-09: 19 OI2026-10-14: 30 OI2026-10-15: 30 OI2026-10-16: 30 OI2026-10-21: 35 OI2026-10-23: 159 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, 2026Viewing159+124
Oct 21, 202635+5
Oct 16, 2026300
Oct 15, 2026300
Oct 14, 202630+11
Oct 09, 202619+19
Oct 08, 202600
Oct 07, 202600
Oct 06, 202600
Oct 05, 202600
Oct 02, 20260No prior observation