OITracker Cboe delayed data

Contract OI history

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Apr 21, 2028 EXPIRATION

T $20.00 Put

T280421P00020000

Latest saved OI2,208Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
T $20.00 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. 2,2101,1050 2026-10-02: 310 OI2026-10-05: 310 OI2026-10-06: 311 OI2026-10-07: 311 OI2026-10-08: 321 OI2026-10-09: 2,209 OI2026-10-14: 2,210 OI2026-10-15: 2,209 OI2026-10-16: 2,209 OI2026-10-21: 2,208 OI2026-10-23: 2,208 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, 2026Viewing2,2080
Oct 21, 20262,208-1
Oct 16, 20262,2090
Oct 15, 20262,209-1
Oct 14, 20262,210+1
Oct 09, 20262,209+1,888
Oct 08, 2026321+10
Oct 07, 20263110
Oct 06, 2026311+1
Oct 05, 20263100
Oct 02, 2026310No prior observation