Principal MidCap S&P 400 Index R6 (Principal Funds, Inc. - MidCap ) fond

Under normal circumstances, the fund invests at least 80% of its net assets, plus any borrowings for investment purposes, in equity securities of companies that compose the Standard & Poor's ("S&P") MidCap 400 Index at the time of purchase. The index is designed to represent U.S. equities with risk/return characteristics of the mid cap universe.