OITracker Cboe delayed data

Contract OI history

Back to BIRK

Jan 21, 2028 EXPIRATION

BIRK $35.00 Call

BIRK280121C00035000

Latest saved OI881Oct 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 $35.00 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. 8814400 2026-10-02: 881 OI2026-10-05: 881 OI2026-10-06: 881 OI2026-10-07: 881 OI2026-10-08: 881 OI2026-10-09: 881 OI2026-10-13: 881 OI2026-10-14: 881 OI2026-10-15: 881 OI2026-10-16: 881 OI2026-10-20: 881 OI2026-10-23: 881 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, 2026Viewing8810
Oct 20, 20268810
Oct 16, 20268810
Oct 15, 20268810
Oct 14, 20268810
Oct 13, 20268810
Oct 09, 20268810
Oct 08, 20268810
Oct 07, 20268810
Oct 06, 20268810
Oct 05, 20268810
Oct 02, 2026881No prior observation