Mexico, Brazil edge up in volatile sessions By: MarketWatch July 27, 2009 at 15:48 PM EDT Stocks gained ground as investors weighed prospects of a slower economic recovery along with signs of a rebound in the U.S. housing market. Read More >> Related Stocks: America Movil S.A.B. DE C.V. ADR Dow Jones Industrial Average (EOD) Petrobras - Petroleo Brasileiro S.A.