OITracker Cboe delayed data

Contract OI history

Back to BIRK

Jan 15, 2027 EXPIRATION

BIRK $25.00 Put

BIRK270115P00025000

Latest saved OI1,004Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BIRK $25.00 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. 1,0105050 2026-10-02: 1,009 OI2026-10-05: 1,009 OI2026-10-06: 1,009 OI2026-10-07: 1,009 OI2026-10-08: 1,009 OI2026-10-09: 1,010 OI2026-10-13: 1,010 OI2026-10-14: 1,010 OI2026-10-15: 1,010 OI2026-10-16: 1,009 OI2026-10-20: 1,004 OI2026-10-23: 1,004 OI Oct 02, 2026Oct 23, 2026

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

BIRK contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,0040
Oct 20, 20261,004-5
Oct 16, 20261,009-1
Oct 15, 20261,0100
Oct 14, 20261,0100
Oct 13, 20261,0100
Oct 09, 20261,010+1
Oct 08, 20261,0090
Oct 07, 20261,0090
Oct 06, 20261,0090
Oct 05, 20261,0090
Oct 02, 20261,009No prior observation