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Contract OI history

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Nov 20, 2026 EXPIRATION

BIRK $35.00 Call

BIRK261120C00035000

Latest saved OI7,458Oct 23, 2026
Last change-114vs 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. 8,0774,0380 2026-10-02: 8,077 OI2026-10-05: 7,826 OI2026-10-06: 7,812 OI2026-10-07: 7,814 OI2026-10-08: 7,814 OI2026-10-09: 7,857 OI2026-10-13: 7,711 OI2026-10-14: 7,711 OI2026-10-15: 7,720 OI2026-10-16: 7,320 OI2026-10-20: 7,572 OI2026-10-23: 7,458 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, 2026Viewing7,458-114
Oct 20, 20267,572+252
Oct 16, 20267,320-400
Oct 15, 20267,720+9
Oct 14, 20267,7110
Oct 13, 20267,711-146
Oct 09, 20267,857+43
Oct 08, 20267,8140
Oct 07, 20267,814+2
Oct 06, 20267,812-14
Oct 05, 20267,826-251
Oct 02, 20268,077No prior observation