AMD shares tumble as CEO forecasts declining data center sales

(Reuters) -Advanced Micro Devices failed to impress investors waiting for the chipmaker to gain ground against AI heavyweight Nvidia, even as its quarterly results and revenue outlook exceeded analyst estimates on Tuesday. AMD's shares fell about 18% last year, in contrast to larger rival Nvidia's rise of more than 171%. AMD has been fighting to increase its share of the market for sophisticated AI processors sold mostly by Nvidia to heavyweight tech customers including Amazon and Microsoft.