He's just making the money that American tycoons don't want to.
Microsoft founder Bill Gates looks to have lost his title as the world's richest man, toppled from the top spot by the Mexican telecoms tycoon Carlos Slim.
Three months ago the cigar-chomping Mr Slim quietly slipped past legendary US investor Warren Buffett to take second place in the global wealth league.
Now, thanks to a surge in the shares of his America Movil group, Mr Slim has claimed pole position, according to the Mexican online financial publication, Sentido Comun. I can hear Bill Gates now: "Build that stock market wall!"