OITracker Cboe delayed data

Contract OI history

Back to BIRK

Nov 20, 2026 EXPIRATION

BIRK $32.50 Call

BIRK261120C00032500

Latest saved OI72Oct 23, 2026
Last change+2vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BIRK $32.50 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 72360 2026-10-02: 15 OI2026-10-05: 25 OI2026-10-06: 25 OI2026-10-07: 25 OI2026-10-08: 25 OI2026-10-09: 47 OI2026-10-13: 47 OI2026-10-14: 47 OI2026-10-15: 45 OI2026-10-16: 38 OI2026-10-20: 70 OI2026-10-23: 72 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, 2026Viewing72+2
Oct 20, 202670+32
Oct 16, 202638-7
Oct 15, 202645-2
Oct 14, 2026470
Oct 13, 2026470
Oct 09, 202647+22
Oct 08, 2026250
Oct 07, 2026250
Oct 06, 2026250
Oct 05, 202625+10
Oct 02, 202615No prior observation