OITracker Cboe delayed data

Contract OI history

Back to TOST

Jan 15, 2027 EXPIRATION

TOST $27.00 Put

TOST270115P00027000

Latest saved OI6,360Oct 23, 2026
Last change-10vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TOST $27.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 6,3703,1850 2026-10-02: 6,239 OI2026-10-05: 6,240 OI2026-10-06: 6,222 OI2026-10-07: 6,222 OI2026-10-08: 6,222 OI2026-10-09: 6,216 OI2026-10-13: 6,207 OI2026-10-14: 6,207 OI2026-10-15: 6,209 OI2026-10-16: 6,209 OI2026-10-21: 6,370 OI2026-10-23: 6,360 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, 20266,360-10
Oct 21, 2026Viewing6,370+161
Oct 16, 20266,2090
Oct 15, 20266,209+2
Oct 14, 20266,2070
Oct 13, 20266,207-9
Oct 09, 20266,216-6
Oct 08, 20266,2220
Oct 07, 20266,2220
Oct 06, 20266,222-18
Oct 05, 20266,240+1
Oct 02, 20266,239No prior observation