OITracker Cboe delayed data

Contract OI history

Back to B

Jan 19, 2029 EXPIRATION

B $28.00 Put

B290119P00028000

Latest saved OI19Oct 23, 2026
Last change+5vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $28.00 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. 1990 2026-10-02: 7 OI2026-10-05: 8 OI2026-10-06: 8 OI2026-10-07: 8 OI2026-10-08: 9 OI2026-10-09: 9 OI2026-10-13: 9 OI2026-10-14: 10 OI2026-10-15: 12 OI2026-10-16: 12 OI2026-10-21: 14 OI2026-10-23: 19 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, 2026Viewing19+5
Oct 21, 202614+2
Oct 16, 2026120
Oct 15, 202612+2
Oct 14, 202610+1
Oct 13, 202690
Oct 09, 202690
Oct 08, 20269+1
Oct 07, 202680
Oct 06, 202680
Oct 05, 20268+1
Oct 02, 20267No prior observation