X0101 EFFECT 33 LIVE 2016-05-23 0000892712-16-001692 485APOS 0001014913 FRONTIER FUNDS, INC. 333-07305 S000052808 Frontier Silk Invest New Horizons Fund C000165918 Institutional Class S000052808 Frontier Silk Invest New Horizons Fund C000165919 Service Class