Jeffrey T. Lewis 

RIO DE JANEIRO--Brazilian shares rose Friday, led by real estate developer Rossi Residencial and iron miner Vale, and the real weakened slight against the dollar.

The benchmark Ibovespa stocks index rose 2.4% to 49650 points. The real exited active trading at 2.6610 to the dollar, according to Tullett Prebon via FactSet, after closing at 2.6555 on Thursday.

Rossi shares had the biggest gain in the index on Friday, rising 9.6% to 2.39 reais, followed by Vale, which rose 8.2% to 18.78 reais. Shares of state-controlled oil company Petrobras advanced 3.9% to 9.83.

Transport company Cosan Logistica had the biggest decline in the index, giving up 3.5% to 2.75 reais.

Write to Jeffrey T. Lewis at jeffrey.lewis@wsj.com