The U.S. cryptocurrency exchange Poloniex is facing an uncertain future. It has recently lost support from Circle after the major cryptocurrency firm found it simply unprofitable. The Goldman Sachs-backed firm has let go of some 30 employees this year due to the regulatory climate. Circle, which acquired Poloniex in early 2018, is now stepping back and others are looking to take its spot. Poloniex will be also rebranding to Polo Digital Assets.