Nick Woodman: The founder of GoPro might want to hook a GoPro to his net worth, since it's been jumping and falling more than a motocross racer. The company's IPO made him a billionaire, and his net worth shot up to more than $4.8 billion as the stock tripled over the following months. But over the past couple of weeks, shares have fallen back toward $70, cutting Woodman's fortune back to a little more than $3 billion. That includes his gift of 5.8 million shares to charity—a well-timed move for his tax writeoff, since it was announced when the stock was close to its high of $98.47.
Reed Hastings: The Netflix CEO is no stranger to sudden wealth loss. Hastings saw the value of his Netflix stake fall by 75 percent in 2011, to $217 million, when the stock price plunged. After last night's disappointing earnings results, the stock was down about one-third at the market's open, compared to its top in September. That means Hastings has lost his billionaire status (at least on paper), as his stake in the company went from $1.2 billion to around $800 million. Hastings, of course, has been selling shares regularly throughout the company's history, so he's got a good safety stash.
Carl Icahn got hit in the collateral damage of Netflix as well, losing $200 million on paper overnight. Luckily for him, he sold off a good portion of his Netflix stake last year.