OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

TOST $37.00 Call

TOST280121C00037000

Latest saved OI843Oct 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 $37.00 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. 8484240 2026-10-02: 477 OI2026-10-05: 477 OI2026-10-06: 477 OI2026-10-07: 477 OI2026-10-08: 477 OI2026-10-09: 477 OI2026-10-13: 477 OI2026-10-14: 477 OI2026-10-15: 841 OI2026-10-16: 841 OI2026-10-21: 848 OI2026-10-23: 843 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, 2026843-5
Oct 21, 2026Viewing848+7
Oct 16, 20268410
Oct 15, 2026841+364
Oct 14, 20264770
Oct 13, 20264770
Oct 09, 20264770
Oct 08, 20264770
Oct 07, 20264770
Oct 06, 20264770
Oct 05, 20264770
Oct 02, 2026477No prior observation