OITracker Cboe delayed data

Contract OI history

Back to TOST

Jan 21, 2028 EXPIRATION

TOST $28.00 Call

TOST280121C00028000

Latest saved OI860Oct 23, 2026
Last change-2vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TOST $28.00 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. 1,0705350 2026-10-02: 1,070 OI2026-10-05: 1,066 OI2026-10-06: 1,066 OI2026-10-07: 1,064 OI2026-10-08: 1,064 OI2026-10-09: 1,063 OI2026-10-13: 1,060 OI2026-10-14: 1,060 OI2026-10-15: 1,060 OI2026-10-16: 1,063 OI2026-10-21: 862 OI2026-10-23: 860 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, 2026Viewing860-2
Oct 21, 2026862-201
Oct 16, 20261,063+3
Oct 15, 20261,0600
Oct 14, 20261,0600
Oct 13, 20261,060-3
Oct 09, 20261,063-1
Oct 08, 20261,0640
Oct 07, 20261,064-2
Oct 06, 20261,0660
Oct 05, 20261,066-4
Oct 02, 20261,070No prior observation