X0101 EFFECT 33 LIVE 2010-04-01 13:00:00

N-1A

0001479360 PIMCO Equity Series 333-164077 S000028117 PIMCO EqS Pathfinder Fund C000085703 Institutional S000028117 PIMCO EqS Pathfinder Fund C000085704 Class P S000028117 PIMCO EqS Pathfinder Fund C000085705 Administrative Class S000028117 PIMCO EqS Pathfinder Fund C000085706 Class D S000028117 PIMCO EqS Pathfinder Fund C000085707 Class A S000028117 PIMCO EqS Pathfinder Fund C000085708 Class C S000028117 PIMCO EqS Pathfinder Fund C000085709 Class R