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Contract OI history

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Jan 21, 2028 EXPIRATION

BIRK $50.00 Call

BIRK280121C00050000

Latest saved OI2,219Oct 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 $50.00 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. 2,2231,1110 2026-10-02: 2,223 OI2026-10-05: 2,222 OI2026-10-06: 2,222 OI2026-10-07: 2,222 OI2026-10-08: 2,222 OI2026-10-09: 2,222 OI2026-10-13: 2,218 OI2026-10-14: 2,218 OI2026-10-15: 2,218 OI2026-10-16: 2,219 OI2026-10-20: 2,219 OI2026-10-23: 2,219 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, 2026Viewing2,2190
Oct 20, 20262,2190
Oct 16, 20262,219+1
Oct 15, 20262,2180
Oct 14, 20262,2180
Oct 13, 20262,218-4
Oct 09, 20262,2220
Oct 08, 20262,2220
Oct 07, 20262,2220
Oct 06, 20262,2220
Oct 05, 20262,222-1
Oct 02, 20262,223No prior observation