By Patrick Gillespie @CNNMoney December 31, 2015: 5:16 PM ET
Total Systems Services +46.6%
9 of 10
A credit card processing company, Total System Services(TSS) may sound boring but it's been a booming stock.
The company has a large stake in a Chinese payments network that is sanctioned by the People's Bank of China, China's central bank. That's made it one of the world's largest and fastest-growing payments networks.
