OITracker Cboe delayed data

Contract OI history

Back to B

Jan 21, 2028 EXPIRATION

B $55.00 Put

B280121P00055000

Latest saved OI1,567Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $55.00 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. 1,5687840 2026-10-02: 1,568 OI2026-10-05: 1,568 OI2026-10-06: 1,568 OI2026-10-07: 1,568 OI2026-10-08: 1,568 OI2026-10-09: 1,568 OI2026-10-13: 1,568 OI2026-10-14: 1,568 OI2026-10-15: 1,568 OI2026-10-16: 1,568 OI2026-10-21: 1,567 OI2026-10-23: 1,567 OI Oct 02, 2026Oct 23, 2026

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

B contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,5670
Oct 21, 20261,567-1
Oct 16, 20261,5680
Oct 15, 20261,5680
Oct 14, 20261,5680
Oct 13, 20261,5680
Oct 09, 20261,5680
Oct 08, 20261,5680
Oct 07, 20261,5680
Oct 06, 20261,5680
Oct 05, 20261,5680
Oct 02, 20261,568No prior observation