Fortune: These are the 5 Hottest Companies in Fintech

Recent research by Citigroup (C, -0.07%) projects that revenues of financial technology startups will leap 10 times, to more than $100 billion, in the next four years. Here are a handful of companies with major growth potential.

Digital Assets Holdings
Year founded: 2014
Notable Investors: Citigroup, IBM

Key Speakers At The Bank Of England Open ForumBlythe Masters, chief executive officer of Digital Asset Holdings LLC, gestures as she speaks at the Bank of England Open Forum at the Guildhall in London on Wednesday, Nov. 11, 2015. Bloomberg Bloomberg via Getty Images

High-frequency traders can swap stocks in milli­seconds, but it still takes a day or more for the money to move in many of Wall Street’s markets. Digital Asset Holding plans to speed that using blockchain—the technology behind Bitcoin. Blythe Masters, a pioneer of credit default swaps at JPMorgan Chase, joined as CEO last year.

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