OITracker Cboe delayed data

Contract OI history

Back to TOST

Oct 23, 2026 EXPIRATION

TOST $32.50 Put

TOST261023P00032500

Latest saved OI776Oct 23, 2026
Last change+726vs previous saved observation
Saved market days11Oct 05, 2026 onwards
Daily open interest Hover a point for its date and OI
TOST $32.50 put open interest history 11 saved observations from 2026-10-05 to 2026-10-23. Exact values and changes are listed in the table below. 7763880 2026-10-05: 3 OI2026-10-06: 3 OI2026-10-07: 3 OI2026-10-08: 3 OI2026-10-09: 3 OI2026-10-13: 3 OI2026-10-14: 3 OI2026-10-15: 4 OI2026-10-16: 4 OI2026-10-21: 50 OI2026-10-23: 776 OI Oct 05, 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, 2026776+726
Oct 21, 2026Viewing50+46
Oct 16, 202640
Oct 15, 20264+1
Oct 14, 202630
Oct 13, 202630
Oct 09, 202630
Oct 08, 202630
Oct 07, 202630
Oct 06, 202630
Oct 05, 20263No prior observation