OITracker Cboe delayed data

Contract OI history

Back to USB

Jan 21, 2028 EXPIRATION

USB $55.00 Put

USB280121P00055000

Latest saved OI152Oct 23, 2026
Last change+6vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
USB $55.00 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. 152760 2026-10-02: 143 OI2026-10-05: 143 OI2026-10-06: 143 OI2026-10-07: 143 OI2026-10-08: 145 OI2026-10-09: 145 OI2026-10-14: 146 OI2026-10-15: 146 OI2026-10-16: 146 OI2026-10-21: 146 OI2026-10-23: 152 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, 2026Viewing152+6
Oct 21, 20261460
Oct 16, 20261460
Oct 15, 20261460
Oct 14, 2026146+1
Oct 09, 20261450
Oct 08, 2026145+2
Oct 07, 20261430
Oct 06, 20261430
Oct 05, 20261430
Oct 02, 2026143No prior observation