Investing in fintech? There's now an index for that. Keefe, Bruyette, & Woodshas struck a deal with Nasdaq to debut KBW Financial Technology Index (Ticker: DFTX), a publicly traded index focused solely on financial services technology companies. The initial roster will include 49 stocks with a total market capitalization of $785 billion, with business models that leverage technology and revenues that are derived primary by fee income rather than net interest income.