X0101 EFFECT 33 LIVE 2012-06-13 0001144204-12-034634 485APOS 0000898745 PRINCIPAL FUNDS INC 033-59474 S000007170 Preferred Securities Fund C000019596 Class J S000027178 Bond Market Index Fund C000085837 Class J Shares S000032942 Small-MidCap Dividend Income Fund C000115416 Class C S000033960 Global Multi-Strategy Fund C000115417 Class C S000037378 Blue Chip Fund C000115413 Institutional Class S000037379 Opportunistic Municipal Fund C000115414 Class A S000037379 Opportunistic Municipal Fund C000115415 Class C