UPDATE 1-Defaults cast shadow over record profit at Brazil's Itaú
August 04, 2015 at 07:34 AM EDT
SAO PAULO, Aug 4 (Reuters) - A bigger-than-expected jump in loan defaults cast a shadow over strong second-quarter results for Brazil's Itaú Unibanco Holding SA, another signal of the rapidly deteriorating outlook for banks in the nation's slumping economy.