Investing in Quantum: Key Public Companies in the US and Europe
Quantum computing has transitioned from pure research to an emerging industry, with a handful of companies now publicly traded. Many leading quantum players (e.g. Google, IBM, Microsoft) are large tech firms where quantum is a small segment, but direct exposure for investors comes from specialized pure-play quantum companies. Below we analyze the main publicly-listed companies in the quantum computing and related quantum technologies space (focusing on US and Europe), excluding still-private startups. For each company, we provide basic facts, financial metrics, business model, technology approach, partnerships, history, risks, and an investment outlook, enabling a side-by-side comparison.