Jeff Bezos Boosts Fortune by $12 Billion in a Day on Amazon Surge

Jeff Bezos, the world’s richest person, got a lot richer Thursday.

The Amazon.com Inc. founder added $12 billion to his fortune as the company’s shares surged 6.3 percent to $1,614 in extended trading at 4:33 p.m. in New York -- on top of a 4 percent gain during the regular session -- after the retailer reported results that beat Wall Street estimates. That lifted Bezos’s net worth to to $134 billion, according to the Bloomberg Billionaires Index.