Point72 Ventures, the venture arm of billionaire Steve Cohen's investment firm, has joined a consortium of investors in backing a New York-based fintech startup that helps trading firms replace their legacy telephone systems with a cloud-based application.

Cloud9 Technologies has raised $30 million from the group, which includes existing investors JP Morgan, Barclays and Icap, it said on October 12. Trading firm Hudson Ridge Asset Management, one of the startup's early clients, also joined the financing round.