 "Elon Musk")
Silicon Valley entrepreneur Elon Musk's net worth topped $100 billion on Friday, according to the Forbes real-time billionaires list, as the shares of electric-car maker Tesla Inc see a more than five-fold surge in value this year.
A large chunk of his wealth comes from the 21% stake in Tesla, according to Forbes. Tesla shares, which went public at $17 a piece in 2010, rose as much as 3.5% in morning trade to a record high of $2,318.49.
The company became the world's most valuable carmaker by market capitalization on July 1 when it overtook front runner Toyota Motor Corp
