OITracker Cboe delayed data

Contract OI history

Back to TOST

Jan 21, 2028 EXPIRATION

TOST $42.00 Call

TOST280121C00042000

Latest saved OI640Oct 23, 2026
Last change+77vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TOST $42.00 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. 6403200 2026-10-02: 539 OI2026-10-05: 573 OI2026-10-06: 573 OI2026-10-07: 563 OI2026-10-08: 563 OI2026-10-09: 563 OI2026-10-13: 566 OI2026-10-14: 566 OI2026-10-15: 567 OI2026-10-16: 567 OI2026-10-21: 563 OI2026-10-23: 640 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, 2026640+77
Oct 21, 2026Viewing563-4
Oct 16, 20265670
Oct 15, 2026567+1
Oct 14, 20265660
Oct 13, 2026566+3
Oct 09, 20265630
Oct 08, 20265630
Oct 07, 2026563-10
Oct 06, 20265730
Oct 05, 2026573+34
Oct 02, 2026539No prior observation