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Quantum-Si (QSI) stock jumped over 24% after presenting impressive interim Proteus platform data at the HUPO 2026 conference.

All measurable sequencing metrics show profound improvement over Platinum ProBRANFORD, Conn., Sept. 28, 2026 (GLOBE NEWSWIRE) -- Quantum-Si Incorporated (Nasdaq: QSI) (“Quantum-Si,” “QSI” or the “Company”), a proteomics company redefining protein analysis through single-molecule protein sequencing, today announced interim development results comparing its next-generation Proteus™ platform with its commercially available Platinum® Pro instrument. Using a developmental sequencing kit that detects

Detailed price information for Quantum-Si Inc (QSI-Q) from The Globe and Mail including charting and trades.

Quantum-Si to Participate in the H.C. Wainwright 28th Annual Global Investment Conference...

Branford-based Quantum-Si is cutting 20% of its workforce as it delays the launch of its Proteus protein analysis device.

Moby summary of Quantum-Si incorporated's Q2 2026 earnings call

Quantum-Si (NASDAQ:QSI) said it has moved the planned launch of its Proteus protein sequencing platform to the second quarter of 2027 from the end of 2026, citing the need for an additional integrated instrument design cycle before production. The company also announced a targeted workforce reductio

QuantumSi Incorporated (QSI) delivered earnings and revenue surprises of +15.39% and +4.24%, respectively, for the quarter ended June 2026. Do the numbers hold clues to what lies ahead for the stock?

Quantum-Si Reports Second Quarter 2026 Financial Results and Provides Proteus™ Development Update...

Quantum-Si to Report Second Quarter 2026 Financial Results on August 13, 2026

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