OITracker Cboe delayed data

Contract OI history

Back to BIRK

Jan 15, 2027 EXPIRATION

BIRK $32.50 Put

BIRK270115P00032500

Latest saved OI346Oct 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 $32.50 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. 3611800 2026-10-02: 350 OI2026-10-05: 349 OI2026-10-06: 349 OI2026-10-07: 349 OI2026-10-08: 349 OI2026-10-09: 361 OI2026-10-13: 346 OI2026-10-14: 346 OI2026-10-15: 346 OI2026-10-16: 346 OI2026-10-20: 346 OI2026-10-23: 346 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, 2026Viewing3460
Oct 20, 20263460
Oct 16, 20263460
Oct 15, 20263460
Oct 14, 20263460
Oct 13, 2026346-15
Oct 09, 2026361+12
Oct 08, 20263490
Oct 07, 20263490
Oct 06, 20263490
Oct 05, 2026349-1
Oct 02, 2026350No prior observation