Brazil’s President Dilma Rousseff said on Monday she has no plans to replace the chief executive officer of state-run oil firm Petroleo Brasileiro Petrobras SA (ADR) (NYSE:PBR-A), saying there was no evidence that senior management was involved in a graft scandal at the company. Petroleo Brasileiro Petrobras SA (ADR) (NYSE:PBR-A) belongs to Basic Materials sector. Its weekly performance is 16.07%. On last trading day company … Continue reading Stocks Gaining Momentum: Petroleo Brasileiro Petrobras SA (ADR) (NYSE:PBR-A), Halozyme Therapeutics, Inc. (NASDAQ:HALO), Altria Group Inc. (NYSE:MO), TAL Education Group (NYSE:XRS), Kellogg (NYSE:K)