X0101 EFFECT 33 LIVE 2017-06-12 0000898745-17-000924 485APOS 0000898745 PRINCIPAL FUNDS INC 033-59474 S000014241 High Yield Fund C000182294 Class T S000014245 Short-Term Income Fund C000182297 Class T S000024296 Global Diversified Income Fund C000182300 Class T