The Citi-backed investment platform reportedly raised the cash at a $400m-$500m valuation, and will use the funding to expand its product offering.

US-based automated investing service Betterment, which counts financial services provider Citi among its investors, closed a $60m series D round led by private equity firm Francisco Partners yesterday.

The round, which also featured Bessemer Venture Partners, Menlo Ventures and Northwestern Mutual Capital, was raised at a valuation of between $400m and $500m, according to the Wall Street Journal.

Betterment offers an automated investment platform that can build a personalised portfolio spanning a range of asset classes. It currently manages a…