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Contract OI history

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Jan 21, 2028 EXPIRATION

BIRK $32.50 Put

BIRK280121P00032500

Latest saved OI591Oct 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. 5922960 2026-10-02: 592 OI2026-10-05: 592 OI2026-10-06: 592 OI2026-10-07: 592 OI2026-10-08: 592 OI2026-10-09: 592 OI2026-10-13: 592 OI2026-10-14: 592 OI2026-10-15: 592 OI2026-10-16: 591 OI2026-10-20: 591 OI2026-10-23: 591 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, 2026Viewing5910
Oct 20, 20265910
Oct 16, 2026591-1
Oct 15, 20265920
Oct 14, 20265920
Oct 13, 20265920
Oct 09, 20265920
Oct 08, 20265920
Oct 07, 20265920
Oct 06, 20265920
Oct 05, 20265920
Oct 02, 2026592No prior observation