OITracker Cboe delayed data

Contract OI history

Back to TOST

Oct 30, 2026 EXPIRATION

TOST $29.00 Put

TOST261030P00029000

Latest saved OI123Oct 23, 2026
Last change-6vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
TOST $29.00 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: 44 OI2026-10-05: 54 OI2026-10-06: 54 OI2026-10-07: 54 OI2026-10-08: 54 OI2026-10-09: 88 OI2026-10-13: 111 OI2026-10-14: 111 OI2026-10-15: 126 OI2026-10-16: 127 OI2026-10-21: 129 OI2026-10-23: 123 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, 2026Viewing123-6
Oct 21, 2026129+2
Oct 16, 2026127+1
Oct 15, 2026126+15
Oct 14, 20261110
Oct 13, 2026111+23
Oct 09, 202688+34
Oct 08, 2026540
Oct 07, 2026540
Oct 06, 2026540
Oct 05, 202654+10
Oct 02, 202644No prior observation