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Contract OI history

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Nov 20, 2026 EXPIRATION

BIRK $35.00 Put

BIRK261120P00035000

Latest saved OI545Oct 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 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. 5452720 2026-10-02: 6 OI2026-10-05: 7 OI2026-10-06: 7 OI2026-10-07: 7 OI2026-10-08: 7 OI2026-10-09: 10 OI2026-10-13: 448 OI2026-10-14: 448 OI2026-10-15: 491 OI2026-10-16: 501 OI2026-10-20: 545 OI2026-10-23: 545 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, 2026Viewing5450
Oct 20, 2026545+44
Oct 16, 2026501+10
Oct 15, 2026491+43
Oct 14, 20264480
Oct 13, 2026448+438
Oct 09, 202610+3
Oct 08, 202670
Oct 07, 202670
Oct 06, 202670
Oct 05, 20267+1
Oct 02, 20266No prior observation