X0101 EFFECT 33 LIVE 2022-02-28 0001741773-22-000402 485APOS 0000787441 MAINSTAY FUNDS 033-02610 S000006903 MainStay WMC Enduring Capital Fund C000018719 Class A S000006903 MainStay WMC Enduring Capital Fund C000018720 Class B S000006903 MainStay WMC Enduring Capital Fund C000018721 Class C S000006903 MainStay WMC Enduring Capital Fund C000018722 Class I S000006903 MainStay WMC Enduring Capital Fund C000057100 Class R2 S000006903 MainStay WMC Enduring Capital Fund C000060799 INVESTOR CLASS S000006903 MainStay WMC Enduring Capital Fund C000166837 Class R3 S000006903 MainStay WMC Enduring Capital Fund C000179143 Class R6 S000006903 MainStay WMC Enduring Capital Fund C000221699 SIMPLE CLASS S000006906 MainStay WMC Value Fund C000018730 Class A S000006906 MainStay WMC Value Fund C000018731 Class B S000006906 MainStay WMC Value Fund C000018732 Class C S000006906 MainStay WMC Value Fund C000018733 Class I S000006906 MainStay WMC Value Fund C000018734 Class R1 S000006906 MainStay WMC Value Fund C000018735 Class R2 S000006906 MainStay WMC Value Fund C000030959 Class R3 S000006906 MainStay WMC Value Fund C000060801 INVESTOR CLASS S000006906 MainStay WMC Value Fund C000185571 Class R6 S000006906 MainStay WMC Value Fund C000221701 SIMPLE CLASS