Among Brazil ADRs, NET Servicos de Comunicacao ( NETC), Tim Participacoes ( TSU), Petrolea Brasileiro ( PBR) and Braskem ( BAK) gained 23.2%, 12.3%, 8.6% and 7.5%, respectively. The world's fourth largest aircraft maker Empressa Brasileira de Aeronautica ( ERJ) increased 7.5% after the company reported second quarter results broadly in line with analyst expectations. Revenues stood at $1,354 million as against analyst estimation of $1,336 million. On Tuesday, Credit Suisse ( CS), JP Morgan ( JPM) and Banco Santander (Brasil) ( BSBR) upgraded the stock. In yesterday's trading session, the stock closed at its 52-week high of $27.1.