OITracker Cboe delayed data

Contract OI history

Back to TOST

Jan 15, 2027 EXPIRATION

TOST $55.00 Call

TOST270115C00055000

Latest saved OI4,938Oct 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 $55.00 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. 4,9382,4690 2026-10-02: 4,811 OI2026-10-05: 4,911 OI2026-10-06: 4,910 OI2026-10-07: 4,910 OI2026-10-08: 4,910 OI2026-10-09: 4,910 OI2026-10-13: 4,910 OI2026-10-14: 4,910 OI2026-10-15: 4,910 OI2026-10-16: 4,938 OI2026-10-21: 4,938 OI2026-10-23: 4,938 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, 2026Viewing4,9380
Oct 21, 20264,9380
Oct 16, 20264,938+28
Oct 15, 20264,9100
Oct 14, 20264,9100
Oct 13, 20264,9100
Oct 09, 20264,9100
Oct 08, 20264,9100
Oct 07, 20264,9100
Oct 06, 20264,910-1
Oct 05, 20264,911+100
Oct 02, 20264,811No prior observation