Calamos Investments of Naperville, Ill., has filed to launch Calamos Government Money Market Fund says FundFiling.com. The Institutional Govt fund will have a $1 million minimum and be run by John Calamos and former Zurich/Scudder veteran Frank Rachwalski. This is the first money market fund for the Calamos family of funds; the company is known for its convertible bond and preferred stock expertise.