Meet the hard asset that's bigger than Apple, Nvidia, and Microsoft combined. One Wall Street strategist thinks it could hit a $40 trillion market cap.

Meet the hard asset that's bigger than Apple, Nvidia, and Microsoft combined. One Wall Street strategist thinks it could hit a $40 trillion market cap.

This article was originally published on Fool.com. All figures quoted in US dollars unless otherwise stated. Shares of Apple, Nvidia, and Microsoft have exploded in recent years, as investors poured money into stocks that were best positioned to take advantage of the rise in artificial intelligence (AI). These three stocks grew so popular that their combined market capitalization now exceeds $9.2 trillion (as of March 25). Yet, as massive as the…