Signage for 5G mobile experiences is seen at the Qualcomm Inc. booth at the Mobile World Congress Shanghai in Shanghai, China. (Photographer: Qilai Shen/Bloomberg)

Qualcomm Tumbles After Losing U.S. Antitrust Ruling

(Bloomberg) -- Qualcomm Inc. shares fell the most in more than two years after a U.S. judge ruled that the company violated antitrust law by abusing its dominant position in the market for cellphon...