Quantinuum raises IPO share price as investors back quantum bets

In short: Investors are lining up to buy shares in Quantinuum as it prepares to list on the New York Stock Exchange, even though the company is losing money and says its tech may never work.

What's going on

Quantinuum, a company building quantum computers, increased both the price and the number of shares it plans to sell in its stock market debut on Thursday. That change usually signals that more investors want in than the company first expected.

The interest comes even as Quantinuum reported it lost nearly $200 million last year. The company also said revenue fell in the first quarter of 2026. It has warned that its technology may never become practical.

Quantinuum is part of a broader wave. The number of US-listed quantum computing companies has doubled since the start of the year, as more firms go public to raise cash for costly research. Quantum computers are still early-stage machines that aim to tackle certain problems regular computers struggle with, like some chemistry and materials questions (think of it like a calculator that might one day handle a few special kinds of math far faster).

Government support may also be boosting confidence. In May, the US Department of Commerce said it would invest between $2 billion across nine quantum companies, including $100 million into Quantinuum.

What to watch

Quantinuum is the fourth quantum computing firm to list in the US this year, and the first to use a traditional IPO process, which has more rules and disclosure. Many experts say no company has built a quantum computer that is commercially useful yet, so investors are largely betting on the chance the technology pays off later.

Source: Wired