OITracker Cboe delayed data

Contract OI history

Back to TOST

Mar 19, 2027 EXPIRATION

TOST $40.00 Call

TOST270319C00040000

Latest saved OI1,762Oct 23, 2026
Last change0vs 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. 1,7628810 2026-10-02: 478 OI2026-10-05: 477 OI2026-10-06: 480 OI2026-10-07: 482 OI2026-10-08: 482 OI2026-10-09: 482 OI2026-10-13: 478 OI2026-10-14: 478 OI2026-10-15: 1,521 OI2026-10-16: 1,744 OI2026-10-21: 1,762 OI2026-10-23: 1,762 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, 20261,7620
Oct 21, 2026Viewing1,762+18
Oct 16, 20261,744+223
Oct 15, 20261,521+1,043
Oct 14, 20264780
Oct 13, 2026478-4
Oct 09, 20264820
Oct 08, 20264820
Oct 07, 2026482+2
Oct 06, 2026480+3
Oct 05, 2026477-1
Oct 02, 2026478No prior observation