Eight American companies are worth $1 trillion or more, but only Nvidia, Microsoft, and Apple have surpassed the $3 trillion milestone so far. Meta Platforms could join that exclusive club thanks to its efforts in the artificial intelligence (AI) space, which are transforming its social media business.

Microsoft looks poised to open Thursday with a market valuation above $4 trillion, after reporting strong earnings boosted by AI demand. That would make it the second company to achieve such a milestone,