OITracker Cboe delayed data

Contract OI history

Back to TOST

Nov 20, 2026 EXPIRATION

TOST $31.00 Call

TOST261120C00031000

Latest saved OI420Oct 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 $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. 4202100 2026-10-02: 338 OI2026-10-05: 348 OI2026-10-06: 352 OI2026-10-07: 358 OI2026-10-08: 358 OI2026-10-09: 364 OI2026-10-13: 364 OI2026-10-14: 364 OI2026-10-15: 389 OI2026-10-16: 390 OI2026-10-21: 420 OI2026-10-23: 420 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, 20264200
Oct 21, 2026Viewing420+30
Oct 16, 2026390+1
Oct 15, 2026389+25
Oct 14, 20263640
Oct 13, 20263640
Oct 09, 2026364+6
Oct 08, 20263580
Oct 07, 2026358+6
Oct 06, 2026352+4
Oct 05, 2026348+10
Oct 02, 2026338No prior observation