Warren Buffett is now worth $20 billion less than Mark Zuckerberg. Facebook's soaring stock isn't the only reason.
Published
**
· *Mark Zuckerberg passed Warren Buffett on the Bloomberg Billionaires Index last week, as the difference in their net worths ballooned to $20 billion.*
· *The 14% rise in Facebook stock this year has bolstered Zuckerberg's fortune, while the 23% decline in Berkshire stock has hammered Buffett's wealth.*
· *Another...