If Apple overtakes Nvidia, it would reclaim the top spot for the first time since April last year. The close race shows that investors are broadening their focus beyond the obvious beneficiaries of the AI boom, such as Nvidia, which has been at the helm for nearly a year. Apple was last valued at $4.90 trillion as its shares rose marginally in premarket trading on Friday, while Nvidia was roughly at the same level, following a 2.4% decline.