This article is from the FAQ, by with numerous contributions by others.
Families of funds sometimes offer additional services, such as
telephone switching from one fund to another within the family.
With load fund families, switching from one load fund to another
is sometimes allowed without paying a second load. Some families
may make bookkeeping easier by listing all of an investor's
different funds on one statement. Others reduce expenses by
sharing services which realize economies of scale. Note, however,
that the good advertised performance of one fund in a family
may or may not be shared by others.
 
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