Relatively speaking, the directors and executives at Nvidia own a lot of stock. At Microsoft, the most valuable U.S. company right now (with a $3.3 trillion market cap), directors and executive officers together own less than 1% of the software giant's shares, per its latest proxy. The same is true at Apple, which has the second largest market cap, at $3.3 trillion. At Nvidia, directors and executive officers owned 4.23% of shares as of March 25, per its proxy filing. Altogether, that's more than $130 billion worth of shares, though the vast majority of that is in the hands of Huang. One big reason for the shareholding difference is that, unlike Nvidia, none of the founders of Microsoft or Apple still serve on the board or as senior executives.