About US$8.71 per share comes from international investments, and if the dollar appreciates another 10 percent, the overseas contribution to Yahoo!'s share value would be reduced by $0.87, to $7.84 per share, according to paidContent.

Meanwhile, at a company like eBay, earnings could go down by 8 percent. And although it would seem Google would suffer, as more than 50 percent of its revenue comes from abroad, it is actually the “least vulnerable to currency movements, given its heightened level of profitability,” paidContent reported.