OITracker Cboe delayed data

Contract OI history

Back to TOST

Jan 21, 2028 EXPIRATION

TOST $30.00 Call

TOST280121C00030000

Latest saved OI1,716Oct 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 $30.00 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. 1,7258620 2026-10-02: 1,725 OI2026-10-05: 1,722 OI2026-10-06: 1,722 OI2026-10-07: 1,722 OI2026-10-08: 1,722 OI2026-10-09: 1,722 OI2026-10-13: 1,705 OI2026-10-14: 1,705 OI2026-10-15: 1,711 OI2026-10-16: 1,712 OI2026-10-21: 1,716 OI2026-10-23: 1,716 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, 2026Viewing1,7160
Oct 21, 20261,716+4
Oct 16, 20261,712+1
Oct 15, 20261,711+6
Oct 14, 20261,7050
Oct 13, 20261,705-17
Oct 09, 20261,7220
Oct 08, 20261,7220
Oct 07, 20261,7220
Oct 06, 20261,7220
Oct 05, 20261,722-3
Oct 02, 20261,725No prior observation