Kansas City-based mutual fund giant American Century Investments has expanded its suite of liquid alternative investment strategies with the launch of a new long/short equity fund.  The new fund, named the AC Alternatives Disciplined Long Short Fund, is aimed at clients and investors who are seeking equities with potentially lower volatility, the company said in a release.  The new fund is the sixth in the AC Alternatives family of funds that launched in 2015 to provide investors with access to sophisticated alternative investment strategies in more liquid and cost-effective forms. It was formally known as Disciplined Growth Plus and launched...