Shares of Cambricon Technologies on Monday closed lower on the Shanghai Stock Exchange after a representative of Alibaba Group Holding denied speculation that it had ordered 150,000 graphics processing units (GPUs) from the Beijing-based AI chip designer. According to the representative, the platform of Alibaba Cloud – the artificial intelligence and cloud computing services unit of e-commerce giant Alibaba – was powered by multiple Chinese-designed GPUs. Alibaba owns the South China Morning...