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Contract OI history

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Nov 20, 2026 EXPIRATION

BIRK $30.00 Put

BIRK261120P00030000

Latest saved OI516Oct 23, 2026
Last change+107vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BIRK $30.00 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. 5162580 2026-10-02: 107 OI2026-10-05: 119 OI2026-10-06: 226 OI2026-10-07: 229 OI2026-10-08: 229 OI2026-10-09: 248 OI2026-10-13: 251 OI2026-10-14: 251 OI2026-10-15: 256 OI2026-10-16: 249 OI2026-10-20: 409 OI2026-10-23: 516 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, 2026Viewing516+107
Oct 20, 2026409+160
Oct 16, 2026249-7
Oct 15, 2026256+5
Oct 14, 20262510
Oct 13, 2026251+3
Oct 09, 2026248+19
Oct 08, 20262290
Oct 07, 2026229+3
Oct 06, 2026226+107
Oct 05, 2026119+12
Oct 02, 2026107No prior observation