One of Brazil’s best-performing hedge funds has been scooping up the shares of state-controlled oil giant Petrobras. Joao Braga and Marcos Peixoto, who manage US$ 1.3 billion (5 billion reais) at XP Asset Management, have increased their stake in Petrobras, making it the biggest holding of their XP Long Biased fund even as the oil producer’s rally has outpaced the benchmark.