Nvidia was on track to become the most valuable company in history on Thursday (Jul 2), with the chipmaker's market capitalisation reaching US$3.92 trillion as Wall Street doubled down on optimism about artificial intelligence. Shares of the leading designer of high-end AI chips were up 2.2 per cent at US$160.60 in morning trading, giving the company a higher market capitalisation than Apple's record closing value of US$3.915 trillion on Dec 26, 2024. Nvidia's newest chips have made gains in