OITracker Cboe delayed data

Contract OI history

Back to TOST

Jan 15, 2027 EXPIRATION

TOST $27.00 Call

TOST270115C00027000

Latest saved OI1,669Oct 23, 2026
Last change-1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TOST $27.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 1,6708350 2026-10-02: 1,649 OI2026-10-05: 1,649 OI2026-10-06: 1,646 OI2026-10-07: 1,646 OI2026-10-08: 1,646 OI2026-10-09: 1,646 OI2026-10-13: 1,646 OI2026-10-14: 1,646 OI2026-10-15: 1,646 OI2026-10-16: 1,660 OI2026-10-21: 1,670 OI2026-10-23: 1,669 OI Oct 02, 2026Oct 23, 2026

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

TOST contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,669-1
Oct 21, 20261,670+10
Oct 16, 20261,660+14
Oct 15, 20261,6460
Oct 14, 20261,6460
Oct 13, 20261,6460
Oct 09, 20261,6460
Oct 08, 20261,6460
Oct 07, 20261,6460
Oct 06, 20261,646-3
Oct 05, 20261,6490
Oct 02, 20261,649No prior observation