Quantum computing
This theme covers listed companies that build quantum computing hardware or software, plus two large technology companies with quantum research programs. It does not include chip makers or other suppliers that only sell components. Members were chosen because quantum computing is the company's main business or a named research program.
Companies
By tier, with the last 12 months of insider, congressional, contract and lobbying activity.
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Tiers
How much of each company the theme explains.
- Pure-play6 companiesQuantum computing is the main business of each company.
- Diversified2 companies
How this list is chosen
Last reviewed Oct 27, 2026.
A listed company is included when quantum computing is its main business, or when it runs a named quantum computing program inside a larger company. Membership is reviewed twice a year, in March and September, and every change is logged below.
Change log
- Oct 27, 2026First list published with 8 companies.
The case commonly made
What supporters of the theme usually argue. Not our view.
- Supporters point to quantum computers being studied for problems that are very hard for conventional computers.
- The case usually made is that governments and large companies fund quantum research for its long-term potential.
- Supporters argue that the field is early, so many companies pursue different technical approaches at once.
Risks commonly cited
What critics and cautious investors usually raise. Not our view.
- Critics note that commercially useful quantum computers have not yet been shown at scale.
- Risks often raised include the cost of research, small revenue and the need to raise money repeatedly.
- Critics note that it is unclear which technical approach, if any, will prove practical.
Funds with an overlapping focus
Shown for reference. Their holdings and rules differ from this theme, and listing them is not an endorsement.
- QTUMDefiance Quantum ETF
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A theme is a list of companies with something in common, chosen under a published rule. It is information, not a recommendation or investment advice. Activity figures come from public filings, each linked on the company's page; none of it predicts what a price will do. Disclaimer.