Terms of Use The three main categories of mutual funds are money market funds, bond funds, and stock funds. There are a variety of types within each category. Money Market Funds have relatively low risk compared to other mutual funds. They are limited by law to certain high-quality, short-term investments. Money market funds try to keep their value (NAV) at a stable $1.00 per share, but NAV may fall below $1.00 if their investments perform poorly. Investor losses have been rare, but they are
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