OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

TOST $23.00 Call

TOST280121C00023000

Latest saved OI785Oct 23, 2026
Last change-15vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TOST $23.00 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. 8004000 2026-10-02: 797 OI2026-10-05: 800 OI2026-10-06: 800 OI2026-10-07: 800 OI2026-10-08: 800 OI2026-10-09: 800 OI2026-10-13: 800 OI2026-10-14: 800 OI2026-10-15: 800 OI2026-10-16: 800 OI2026-10-21: 800 OI2026-10-23: 785 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, 2026Viewing785-15
Oct 21, 20268000
Oct 16, 20268000
Oct 15, 20268000
Oct 14, 20268000
Oct 13, 20268000
Oct 09, 20268000
Oct 08, 20268000
Oct 07, 20268000
Oct 06, 20268000
Oct 05, 2026800+3
Oct 02, 2026797No prior observation