IonQ ( IONQ 10.84%) stock posted big gains in Friday's trading. The quantum-computing company's share price closed out the ...

The S&P 500 ended the day 1.3% higher, its biggest rise since November 6 — the day after Donald Trump’s election victory ...

Wall Street snapped out of its holiday-season funk on Friday. The Standard & Poor's 500 rallied 1.3% for its first gain since ...