OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

BIRK $30.00 Put

BIRK270115P00030000

Latest saved OI433Oct 23, 2026
Last change+15vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BIRK $30.00 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. 4332160 2026-10-02: 423 OI2026-10-05: 424 OI2026-10-06: 421 OI2026-10-07: 421 OI2026-10-08: 421 OI2026-10-09: 422 OI2026-10-13: 422 OI2026-10-14: 422 OI2026-10-15: 422 OI2026-10-16: 422 OI2026-10-20: 418 OI2026-10-23: 433 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, 2026Viewing433+15
Oct 20, 2026418-4
Oct 16, 20264220
Oct 15, 20264220
Oct 14, 20264220
Oct 13, 20264220
Oct 09, 2026422+1
Oct 08, 20264210
Oct 07, 20264210
Oct 06, 2026421-3
Oct 05, 2026424+1
Oct 02, 2026423No prior observation