OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

BFLY $12.50 Call

BFLY280121C00012500

Latest saved OI1,018Oct 23, 2026
Last change+3vs 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. 1,0185090 2026-10-02: 999 OI2026-10-05: 999 OI2026-10-06: 1,001 OI2026-10-07: 1,000 OI2026-10-08: 1,000 OI2026-10-09: 1,002 OI2026-10-13: 1,002 OI2026-10-14: 1,002 OI2026-10-15: 1,002 OI2026-10-16: 1,012 OI2026-10-21: 1,015 OI2026-10-23: 1,018 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, 2026Viewing1,018+3
Oct 21, 20261,015+3
Oct 16, 20261,012+10
Oct 15, 20261,0020
Oct 14, 20261,0020
Oct 13, 20261,0020
Oct 09, 20261,002+2
Oct 08, 20261,0000
Oct 07, 20261,000-1
Oct 06, 20261,001+2
Oct 05, 20269990
Oct 02, 2026999No prior observation