How does Bill Gates make his billions?

Bill Gates is worth an astounding $81.6 billion and he keeps getting richer every year.
His secret weapon is a man you have probably never heard of:
Michael Larson.


Gates hired Larson 20 years ago, when his net worth was a relatively paltry $5 billion, report Anupreeta Das and Craig Karmin at the Wall Street Journal, who just wrote a profile on the notoriously secretive Larson.

Larson runs Gates' personal investment company Cascade Investment LLC, funded solely by Gates.
At one time, Gates' wealth depended solely on Microsoft. But for years he's been selling off his Microsoft stake. The common perception is that he's been using the proceeds from those sales directly for charity. That's not entirely how it works.

Although Gates makes his own investments in tech, it is Larson, through Cascade, who has taken Gate's money and diversified it. Gates now has vast holdings in real estate and nontech companies like the Canadian National Railway Co., AutoNation Inc., and Republic Services Inc. It is these vast holdings that help fund the Gates' donations.

And although Gates has given an astounding $38 billion to his charitable foundation, thanks to Larson, he's getting richer faster than he can give his money away.

His $81.6 billion is nearly $6 billion more than it was as of March 2014, when he was worth $76 billion, we reported at the time. And $76 billion was $9 billion more than he was worth in March, 2013.