OITracker Cboe delayed data

Contract OI history

Back to BFLY

Jan 15, 2027 EXPIRATION

BFLY $4.00 Put

BFLY270115P00004000

Latest saved OI409Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BFLY $4.00 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. 5102550 2026-10-02: 500 OI2026-10-05: 500 OI2026-10-06: 500 OI2026-10-07: 500 OI2026-10-08: 510 OI2026-10-09: 409 OI2026-10-13: 409 OI2026-10-14: 409 OI2026-10-15: 409 OI2026-10-16: 409 OI2026-10-21: 409 OI2026-10-23: 409 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, 2026Viewing4090
Oct 21, 20264090
Oct 16, 20264090
Oct 15, 20264090
Oct 14, 20264090
Oct 13, 20264090
Oct 09, 2026409-101
Oct 08, 2026510+10
Oct 07, 20265000
Oct 06, 20265000
Oct 05, 20265000
Oct 02, 2026500No prior observation