OITracker Cboe delayed data

Contract OI history

Back to TOST

Jan 15, 2027 EXPIRATION

TOST $40.00 Call

TOST270115C00040000

Latest saved OI4,685Oct 23, 2026
Last change+63vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TOST $40.00 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. 4,6852,3420 2026-10-02: 4,504 OI2026-10-05: 4,542 OI2026-10-06: 4,541 OI2026-10-07: 4,541 OI2026-10-08: 4,541 OI2026-10-09: 4,583 OI2026-10-13: 4,589 OI2026-10-14: 4,589 OI2026-10-15: 4,590 OI2026-10-16: 4,588 OI2026-10-21: 4,622 OI2026-10-23: 4,685 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, 20264,685+63
Oct 21, 2026Viewing4,622+34
Oct 16, 20264,588-2
Oct 15, 20264,590+1
Oct 14, 20264,5890
Oct 13, 20264,589+6
Oct 09, 20264,583+42
Oct 08, 20264,5410
Oct 07, 20264,5410
Oct 06, 20264,541-1
Oct 05, 20264,542+38
Oct 02, 20264,504No prior observation