Principal High Yield Fund Class R-6 NMFQS:PHYFX

Under normal circumstances, the fund invests at least 80% of its net assets, plus any borrowings for investment purposes, in below investment grade bonds and bank loans (sometimes called “high yield” or “junk”), which are rated Ba1 or lower by Moody’s Investors Service, Inc. (“Moody’s”) and BB+ or lower by S&P Global Ratings. It also invests in investment grade bank loans (also known as senior floating rate interests) and securities of foreign issuers.