OITracker Cboe delayed data

Contract OI history

Back to U

May 21, 2027 EXPIRATION

U $55.00 Call

U270521C00055000

Latest saved OI823Oct 23, 2026
Last change+47vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
U $55.00 call open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 8234110 2026-10-02: 161 OI2026-10-05: 161 OI2026-10-06: 163 OI2026-10-07: 163 OI2026-10-08: 163 OI2026-10-09: 179 OI2026-10-14: 679 OI2026-10-15: 699 OI2026-10-16: 699 OI2026-10-21: 776 OI2026-10-23: 823 OI Oct 02, 2026Oct 23, 2026

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

U contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026823+47
Oct 21, 2026Viewing776+77
Oct 16, 20266990
Oct 15, 2026699+20
Oct 14, 2026679+500
Oct 09, 2026179+16
Oct 08, 20261630
Oct 07, 20261630
Oct 06, 2026163+2
Oct 05, 20261610
Oct 02, 2026161No prior observation