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Contract OI history

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Nov 20, 2026 EXPIRATION

BFLY $12.50 Call

BFLY261120C00012500

Latest saved OI1,885Oct 23, 2026
Last change-56vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BFLY $12.50 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. 1,9929960 2026-10-02: 1,798 OI2026-10-05: 1,819 OI2026-10-06: 1,837 OI2026-10-07: 1,888 OI2026-10-08: 1,935 OI2026-10-09: 1,987 OI2026-10-13: 1,992 OI2026-10-14: 1,987 OI2026-10-15: 1,985 OI2026-10-16: 1,977 OI2026-10-21: 1,941 OI2026-10-23: 1,885 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

BFLY contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,885-56
Oct 21, 20261,941-36
Oct 16, 20261,977-8
Oct 15, 20261,985-2
Oct 14, 20261,987-5
Oct 13, 20261,992+5
Oct 09, 20261,987+52
Oct 08, 20261,935+47
Oct 07, 20261,888+51
Oct 06, 20261,837+18
Oct 05, 20261,819+21
Oct 02, 20261,798No prior observation