Quantum-Si (QSI)

Common Shares

Sell: $0.7433|Buy: $0.75|Change: 0.04 (5.45%)

Open

$0.775

Previous close

$0.7114

Trade high

$0.783

Volume

3,137,621

Year high

$3.10

Year low

$0.6912

Dividend yield

–

Market capitalisation

$161.66 mn

P/E ratio

4.55

ISIN

US74765K1051

This share can be held in a Dealing account Stocks and shares ISA Lifetime ISA JISA SIPP

Share price

Performance 07/04/2026

1D | 1M | 3M | 1Y | 3Y ann | 5Y ann | 10Y ann

	Total return (%)
Quantum-Si	- 2.43
More...

Company profile

Quantum-Si Inc is a life sciences company focused on proteomics research and analytical technologies. It develops single-molecule detection platforms designed to enable next-generation protein sequencing (NGPS) and large-scale protein analysis. Its technology supports massively parallel sequencing of proteins and can also be applied to the study of nucleic acids, providing tools for researchers and clinical applications in molecular analysis. The company's revenue is derivedfrom sales of products and services.

Sector

Healthcare

AJ Bell Management Limited (company number 03948391), AJ Bell Securities Limited (company number 02723420) and AJ Bell Asset Management Limited (company number 09742568) are authorised and regulated by the Financial Conduct Authority. All companies are registered in England and Wales at 4 Exchange Quay, Salford Quays, Manchester M5 3EE. See website for full details. AJ Bell procures the provision of the Morningstar Licensed Tools on an “as is” basis and does not guarantee the performance of or accept liability for the Licensed Tools. To the maximum extent permitted by law, AJ Bell excludes liability for the Licensed Tools, including liability for any failure, interruption, delay or defect in the performance of any Licensed Tool, unless it arises as a direct result of the negligence of AJ Bell.