OITracker Cboe delayed data

Contract OI history

Back to TOST

Dec 18, 2026 EXPIRATION

TOST $29.00 Call

TOST261218C00029000

Latest saved OI189Oct 23, 2026
Last change+5vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TOST $29.00 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. 189940 2026-10-02: 177 OI2026-10-05: 177 OI2026-10-06: 187 OI2026-10-07: 187 OI2026-10-08: 187 OI2026-10-09: 187 OI2026-10-13: 186 OI2026-10-14: 186 OI2026-10-15: 186 OI2026-10-16: 184 OI2026-10-21: 184 OI2026-10-23: 189 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, 2026189+5
Oct 21, 2026Viewing1840
Oct 16, 2026184-2
Oct 15, 20261860
Oct 14, 20261860
Oct 13, 2026186-1
Oct 09, 20261870
Oct 08, 20261870
Oct 07, 20261870
Oct 06, 2026187+10
Oct 05, 20261770
Oct 02, 2026177No prior observation