Money market fund
From ACT Wiki
(MMF).
A managed fund which invests in money market instruments.
Some money market funds are structured as 'liquid' money market funds, designed to be lower risk managed funds by - among other features - investing only in liquid money market instruments of the highest credit quality.
Other money market funds seek to provide higher average expected income through a longer dated, higher risk and less liquid portfolio.
See also
Other links
8Understanding MMF investments, The Treasurer, September 2012