U.S. stocks fell Friday on worries that good news on the job market may be too good and prove to be bad for Wall Street by keeping inflation and interest rates high. The S&P 500 tumbled 1.5% to close its fourth losing week in the last five.

Uber drove 3.2% higher after the ride-hailing app said it would accelerate $1.5 billion in purchases of its own stock, part of a previously announced $7 billion buyback program. Uber’s chief financial officer, Prashanth Mahendra-Rajah, said it’s making the move because its stock price looks cheap compared with the strength of its business.