FactSet Research Systems (FDS - Get Report) shares are up over 20% since the start of the year - more than double the rise of the S&P 500.

"Just about every large investment manager or bank you can imagine uses our product in one shape or form," said CEO Phil Snow, adding that the company recently closed a deal with Bank of America Merrill Lynch to service 15,000 advisors.

FactSet is a data system that allows financial professionals to access data about stocks - from checking a stock price to historical data to fundamental analysis.