U.S. stocks fall as Huawei ban prompts sell-off in chipmakers

Chipmakers and other technology companies pulled U.S. stocks lower Monday, extending the market's losses into another week. The U.S. decision to ban technology sales to China's Huawei hammered the tech sector, particularly chipmakers. About one-third of Huawei's suppliers are American chipmakers and investors are worried that the action against Huawei could crimp sales for companies with revenue heavily tied to China. Apple also skidded after an analyst warned that the iPhone maker's growth pros