OITracker Cboe delayed data

Contract OI history

Back to B

Jan 15, 2027 EXPIRATION

B $38.00 Put

B270115P00038000

Latest saved OI1,474Oct 23, 2026
Last change+12vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $38.00 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. 1,4747370 2026-10-02: 1,377 OI2026-10-05: 1,370 OI2026-10-06: 1,370 OI2026-10-07: 1,370 OI2026-10-08: 1,383 OI2026-10-09: 1,383 OI2026-10-13: 1,383 OI2026-10-14: 1,403 OI2026-10-15: 1,430 OI2026-10-16: 1,462 OI2026-10-21: 1,462 OI2026-10-23: 1,474 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, 2026Viewing1,474+12
Oct 21, 20261,4620
Oct 16, 20261,462+32
Oct 15, 20261,430+27
Oct 14, 20261,403+20
Oct 13, 20261,3830
Oct 09, 20261,3830
Oct 08, 20261,383+13
Oct 07, 20261,3700
Oct 06, 20261,3700
Oct 05, 20261,370-7
Oct 02, 20261,377No prior observation