OITracker Cboe delayed data

Contract OI history

Back to TOST

Oct 30, 2026 EXPIRATION

TOST $31.00 Call

TOST261030C00031000

Latest saved OI342Oct 23, 2026
Last change+20vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TOST $31.00 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. 3421710 2026-10-02: 285 OI2026-10-05: 296 OI2026-10-06: 297 OI2026-10-07: 291 OI2026-10-08: 291 OI2026-10-09: 312 OI2026-10-13: 316 OI2026-10-14: 316 OI2026-10-15: 312 OI2026-10-16: 322 OI2026-10-21: 322 OI2026-10-23: 342 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, 2026Viewing342+20
Oct 21, 20263220
Oct 16, 2026322+10
Oct 15, 2026312-4
Oct 14, 20263160
Oct 13, 2026316+4
Oct 09, 2026312+21
Oct 08, 20262910
Oct 07, 2026291-6
Oct 06, 2026297+1
Oct 05, 2026296+11
Oct 02, 2026285No prior observation