OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

TOST $37.00 Call

TOST270115C00037000

Latest saved OI2,691Oct 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 $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. 2,6911,3450 2026-10-02: 1,444 OI2026-10-05: 1,465 OI2026-10-06: 1,464 OI2026-10-07: 1,463 OI2026-10-08: 1,463 OI2026-10-09: 2,498 OI2026-10-13: 2,507 OI2026-10-14: 2,507 OI2026-10-15: 2,453 OI2026-10-16: 2,453 OI2026-10-21: 2,689 OI2026-10-23: 2,691 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, 2026Viewing2,691+2
Oct 21, 20262,689+236
Oct 16, 20262,4530
Oct 15, 20262,453-54
Oct 14, 20262,5070
Oct 13, 20262,507+9
Oct 09, 20262,498+1,035
Oct 08, 20261,4630
Oct 07, 20261,463-1
Oct 06, 20261,464-1
Oct 05, 20261,465+21
Oct 02, 20261,444No prior observation