A Goldman Sachs-backed tech company just bought a major crypto exchange for a reported $400 million

Fintech company Circle announced it bought cryptocurrency exchange Poloniex. 
The company plans to scale the exchange and host a platform for all sorts of tokenized assets. 
Boston-based financial-technology company Circle just dove deeper into the nascent digital-coin market by scooping up cryptocurrency exchange Poloniex, the company announced Monday. 
The acquisition, which is reportedly worth $400 million according to Fortune's Robert Hackett, appears to be a natural move for