Brazil's Itau, Mapfre, Alliance Top Petrobras Insurance Bid -Estado By: FOX Business March 17, 2010 at 20:13 PM EDT Brazil's Itau, Mapfre, Alliance Top Petrobras Insurance Bid -Estado Read More >> Related Stocks: Allianz Se Itau Unibanco Banco Holding S.A. ADR Petrobras - Petroleo Brasileiro S.A.