OITracker Cboe delayed data

Contract OI history

Back to TOST

Jan 21, 2028 EXPIRATION

TOST $25.00 Call

TOST280121C00025000

Latest saved OI1,110Oct 23, 2026
Last change-7vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TOST $25.00 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. 1,1485740 2026-10-02: 1,148 OI2026-10-05: 1,147 OI2026-10-06: 1,147 OI2026-10-07: 1,137 OI2026-10-08: 1,137 OI2026-10-09: 1,137 OI2026-10-13: 1,138 OI2026-10-14: 1,138 OI2026-10-15: 1,120 OI2026-10-16: 1,119 OI2026-10-21: 1,117 OI2026-10-23: 1,110 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, 2026Viewing1,110-7
Oct 21, 20261,117-2
Oct 16, 20261,119-1
Oct 15, 20261,120-18
Oct 14, 20261,1380
Oct 13, 20261,138+1
Oct 09, 20261,1370
Oct 08, 20261,1370
Oct 07, 20261,137-10
Oct 06, 20261,1470
Oct 05, 20261,147-1
Oct 02, 20261,148No prior observation