Quantum-Si Incorporated

QSI

Market cap $514M

BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si to Report Third Quarter 2025 Financial Results on November 5, 2025.

Quantum-Si's (QSI -4.02%) shares weren't quite the picture of health as the trading week came to an end. Investors, concerned about the healthcare technology company potentially making dilutive secondary share issues, traded out of the stock to leave it with a nearly 5% loss on the day.

BRANFORD, Conn--(BUSINESS WIRE)--Quantum-Si to Host Investor & Analyst Event in New York City on November 19, 2025.

BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4).

BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si Announces the Launch of V4 Sequencing Kit, Expanding Proteome Coverage and Unlocking New Applications for Protein Sequencing.

BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si to Participate in the H.C. Wainwright 27th Annual Global Investment Conference.

BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4).

BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si to Participate in the UBS Precision Medicine Frontiers Summit.

QSI posts in-line Q2 loss and 12.4% revenue growth, but a sharp miss on estimates sends shares down nearly 5%.

Quantum-Si (QSI), a developer of next-generation protein sequencing technology, reported its Q2 2025 earnings on August 5, 2025. The most significant news was a steep revenue shortfall, as GAAP sales came in at $0.59 million compared to analyst estimates of $1.11 million—a miss of nearly 46.7%.