Elon Musk's estimated net worth tops $500 billion

For Elon Musk, being the world's richest man is nothing new. On Wednesday, however, the CEO of Tesla hit a milestone even he hadn't achieved before — an estimated net worth of $500 billion. Forbes called it on Wednesday just before market close, citing its Real-Time Billionaires tracker. The milestone fell following a spike in Tesla's share price. (Much of Musk's wealth is tied to the performance of that company's stock , which has doubled since an April earnings call, when he said he would once again be ...