OITracker Cboe delayed data

Contract OI history

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Oct 30, 2026 EXPIRATION

T $21.00 Put

T261030P00021000

Latest saved OI894Oct 23, 2026
Last change+349vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
T $21.00 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. 8944470 2026-10-02: 0 OI2026-10-05: 1 OI2026-10-06: 2 OI2026-10-07: 2 OI2026-10-08: 2 OI2026-10-09: 277 OI2026-10-14: 300 OI2026-10-15: 304 OI2026-10-16: 505 OI2026-10-21: 545 OI2026-10-23: 894 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, 2026Viewing894+349
Oct 21, 2026545+40
Oct 16, 2026505+201
Oct 15, 2026304+4
Oct 14, 2026300+23
Oct 09, 2026277+275
Oct 08, 202620
Oct 07, 202620
Oct 06, 20262+1
Oct 05, 20261+1
Oct 02, 20260No prior observation