OITracker Cboe delayed data

Contract OI history

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Oct 23, 2026 EXPIRATION

TOST $32.50 Call

TOST261023C00032500

Latest saved OI277Oct 23, 2026
Last change-46vs previous saved observation
Saved market days11Oct 05, 2026 onwards
Daily open interest Hover a point for its date and OI
TOST $32.50 call open interest history 11 saved observations from 2026-10-05 to 2026-10-23. Exact values and changes are listed in the table below. 3231610 2026-10-05: 0 OI2026-10-06: 2 OI2026-10-07: 9 OI2026-10-08: 9 OI2026-10-09: 141 OI2026-10-13: 141 OI2026-10-14: 141 OI2026-10-15: 141 OI2026-10-16: 198 OI2026-10-21: 323 OI2026-10-23: 277 OI Oct 05, 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, 2026277-46
Oct 21, 2026Viewing323+125
Oct 16, 2026198+57
Oct 15, 20261410
Oct 14, 20261410
Oct 13, 20261410
Oct 09, 2026141+132
Oct 08, 202690
Oct 07, 20269+7
Oct 06, 20262+2
Oct 05, 20260No prior observation