OITracker Cboe delayed data

Contract OI history

Back to BFLY

Jan 21, 2028 EXPIRATION

BFLY $4.00 Call

BFLY280121C00004000

Latest saved OI5,087Oct 23, 2026
Last change-5vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BFLY $4.00 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. 5,0962,5480 2026-10-02: 5,096 OI2026-10-05: 5,076 OI2026-10-06: 5,072 OI2026-10-07: 5,072 OI2026-10-08: 5,072 OI2026-10-09: 5,072 OI2026-10-13: 5,072 OI2026-10-14: 5,072 OI2026-10-15: 5,073 OI2026-10-16: 5,073 OI2026-10-21: 5,092 OI2026-10-23: 5,087 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, 2026Viewing5,087-5
Oct 21, 20265,092+19
Oct 16, 20265,0730
Oct 15, 20265,073+1
Oct 14, 20265,0720
Oct 13, 20265,0720
Oct 09, 20265,0720
Oct 08, 20265,0720
Oct 07, 20265,0720
Oct 06, 20265,072-4
Oct 05, 20265,076-20
Oct 02, 20265,096No prior observation