Net Servicos de Comunicacao ( NETC) headed the decliners' list, sliding 3.8% last week. Diversified national homebuilder Gafisa ( GFA) dropped 1.6% during the past week. Tele Norte Leste Participacoes ( TNE) dipped 1.1% during the past week. The telecommunications service provider said it would continue to focus on specific markets in 2011, particularly centering on growth opportunities in mobile telephony, high-speed Internet, and pay TV. Major airline Gol Linhas Aereas Inteligentes ( GOL) slipped 0.7%.