BFLY ▼ -1.5% - Butterfly Network, Inc. $BFLY - Merge Labs and Butterfly Network Partner to Advance Ultrasound-Based Brain-Computer Interfaces Butterfly Network shares fell 1.5% today following the announcement of a partnership between Merge Labs and the company to develop ultrasound-based brain-computer interfaces. The decline suggests investors may have concerns about the commercial viability of the technology, the capital requirements for such development, or questions about how the partnership will affect near-term financial performance. 01-SEP-2026 08:15 AM ET