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Contract OI history

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Nov 20, 2026 EXPIRATION

BIRK $25.00 Put

BIRK261120P00025000

Latest saved OI439Oct 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 $25.00 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. 4392190 2026-10-02: 419 OI2026-10-05: 418 OI2026-10-06: 418 OI2026-10-07: 424 OI2026-10-08: 424 OI2026-10-09: 424 OI2026-10-13: 424 OI2026-10-14: 424 OI2026-10-15: 438 OI2026-10-16: 438 OI2026-10-20: 439 OI2026-10-23: 439 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, 2026Viewing4390
Oct 20, 2026439+1
Oct 16, 20264380
Oct 15, 2026438+14
Oct 14, 20264240
Oct 13, 20264240
Oct 09, 20264240
Oct 08, 20264240
Oct 07, 2026424+6
Oct 06, 20264180
Oct 05, 2026418-1
Oct 02, 2026419No prior observation