OITracker Cboe delayed data

Contract OI history

Back to TOST

Oct 30, 2026 EXPIRATION

TOST $25.00 Put

TOST261030P00025000

Latest saved OI124Oct 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 $25.00 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. 129640 2026-10-02: 33 OI2026-10-05: 33 OI2026-10-06: 129 OI2026-10-07: 129 OI2026-10-08: 129 OI2026-10-09: 124 OI2026-10-13: 124 OI2026-10-14: 124 OI2026-10-15: 124 OI2026-10-16: 124 OI2026-10-21: 124 OI2026-10-23: 124 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, 2026Viewing1240
Oct 21, 20261240
Oct 16, 20261240
Oct 15, 20261240
Oct 14, 20261240
Oct 13, 20261240
Oct 09, 2026124-5
Oct 08, 20261290
Oct 07, 20261290
Oct 06, 2026129+96
Oct 05, 2026330
Oct 02, 202633No prior observation