Key Points Quantum computing stocks in general outperformed the market in 2025. IonQ stock in particular barely kept pace with the S&P 500. 10 stocks we like better than IonQ › Shares of quantum computing company IonQ (NYSE: IONQ) soared 10% through 11:25 a.m. ET Monday. And why? That's not entirely clear. So far as I can tell, there's no significant quantum stock news concerning either IonQ stock in particular or quantum stocks in general today. Investor's Business Daily does have a story out, bu ...