The Lima Stock Exchange's General Index fell 0.7% to end at 21,610.01.
The blue-chip Selective Index ended 0.7% lower at 31,662.39, Dow Jones Newswires reported.
Financial holding company Credicorp Ltd. fell 1.3% to end at $125.81. It owns Peru's largest bank, Banco de Credito.
Base metals miner Southern Copper Corp. decreased 0.7% to end at $35.80, while copper miner Sociedad Minera Cerro Verde SAA lost 0.5% at end at $40.80.