Rigetti Computing's (RGTI +3.72%) stock closed at a record high of $56.34 per share on Oct. 15, 2025. That marked a 6,850% gain over its previous 12 months, and was fueled by new contracts, analysts' ...
IonQ's stock has been on a roller-coaster ride this year. The company is taking a different approach to quantum computing than its competitors. This has led its systems to be more accurate, which ...