Beijing-based AI chipmaker Cambricon Technologies, widely seen as a potential alternative to Nvidia in the Chinese market, has issued a rare warning about supply chain risks and excessive speculation in its shares, which have gained 521 per cent in the past 12 months. The company’s Shanghai-listed stock nearly doubled in the last month on a wider rally fuelled by China’s favourable policy support of local artificial intelligence chips and a new AI model from DeepSeek tailored for upcoming...