Rigetti Computing has seen a 3,900% rise in the past year, attracting attention from investors interested in ETFs.

PsiQuantum, which is redeveloping U. S. Steel's former South Works mill, raised $1 billion to build million-qubit scale, fault-tolerant quantum computers that some are touting as the next big thing in ...

Shares of technology companies fell as artificial-intelligence optimism faltered. Shares of Nvidia and other mega-cap AI firms fell by 2% or more. Micron rose in late trading after the memory chip ...