KEY POINTS
  • "I think there are a lot of indicators that there is a bubble" in fintech, J. Christopher Flowers told CNBC.
  • Fintech companies like PayPal and Square have seen their market values soar over the past year.
  • Investors have flocked to high-growth companies at a time when interest rates are at historic lows and money is cheap.

Billionaire investor J. Christopher Flowers is worried there's a bubble emerging in the financial technology market.

"I think there are a lot of indicators that there is a bubble" in fintech, Flowers, CEO of investment firm J.C. Flowers & Co, told CNBC's Annette Weisbach in an interview.