Prospectus - Principal Investors Fund

Principal Investors Fund, Inc. A, B, & C share Prospectus

Principal Investors Money Market A Fund Application

The mutual funds offered in the Principal family of mutual funds are offered by prospectus only. The prospectuses contain more complete information about the funds, including investment objectives, risks, charges and expenses, and should be read carefully before investing or sending money. A free prospectus may be obtained by calling 800.209.9010.