Just two current CEOs of companies in the Standard & Poor's 500, Warren Buffett of Berkshire Hathaway (BRK.A) and Jeffrey Bezos of Amazon.com (AMZN), hold shares in their companies worth more than Zuckerberg's stake in Facebook, according to a USA TODAY analysis of data from S&P Capital IQ. Buffett and Bezos' stakes are valued at $61.7 billion and $56.2 billion, respectively, according to a USA TODAY analysis of data from S&P Capital IQ.
That's not to belittle the move by Zuckerberg, who this week showed off photos of his new baby, a big life-changing event that sparked all the talk about his fortune's future. Here are some numbers to put the vast size of Zuckerberg's fortune into perspective - even among the ranks of CEOs:
* Zuckerberg is already a titan. Zuckerberg's ownership in Facebook alone account for 17% of all the value current CEOs hold in their own companies' shares, based on S&P Capital IQ data.