OITracker Cboe delayed data

Contract OI history

Back to T

Dec 18, 2026 EXPIRATION

T $20.00 Put

T261218P00020000

Latest saved OI6,274Oct 23, 2026
Last change+370vs 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. 6,2743,1370 2026-10-02: 5,835 OI2026-10-05: 5,834 OI2026-10-06: 5,867 OI2026-10-07: 5,867 OI2026-10-08: 5,865 OI2026-10-09: 5,889 OI2026-10-14: 5,910 OI2026-10-15: 5,911 OI2026-10-16: 5,909 OI2026-10-21: 5,904 OI2026-10-23: 6,274 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, 2026Viewing6,274+370
Oct 21, 20265,904-5
Oct 16, 20265,909-2
Oct 15, 20265,911+1
Oct 14, 20265,910+21
Oct 09, 20265,889+24
Oct 08, 20265,865-2
Oct 07, 20265,8670
Oct 06, 20265,867+33
Oct 05, 20265,834-1
Oct 02, 20265,835No prior observation