Goldman Sachs tops first-quarter estimates fueled by trading, investment banking CNBCGoldman Sachs Profit Jumps 28% The Wall Street JournalProfits surge at Goldman Sachs on Wall Street revival Yahoo FinanceGoldman Sachs’ profit jumps 28% on investment banking strength ReutersGoldman Sachs’s stock soars 3.7% after first-quarter earnings crush estimates MarketWatch