OITracker Cboe delayed data

Contract OI history

Back to USB

Jan 21, 2028 EXPIRATION

USB $37.50 Put

USB280121P00037500

Latest saved OI70Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
USB $37.50 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 70350 2026-10-02: 69 OI2026-10-05: 69 OI2026-10-06: 69 OI2026-10-07: 69 OI2026-10-08: 69 OI2026-10-09: 69 OI2026-10-14: 70 OI2026-10-15: 70 OI2026-10-16: 70 OI2026-10-21: 70 OI2026-10-23: 70 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

USB contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing700
Oct 21, 2026700
Oct 16, 2026700
Oct 15, 2026700
Oct 14, 202670+1
Oct 09, 2026690
Oct 08, 2026690
Oct 07, 2026690
Oct 06, 2026690
Oct 05, 2026690
Oct 02, 202669No prior observation