Stocks are starting off Tuesday's trading with modest gains. Second quarter earnings results from banking giants JP Morgan (JPM) and Goldman Sachs (GS) are helping to support the markets. Both beat Wall Street's expectations. But all eyes will be back on the Fed. Federal Reserve Chair Janet Yellen will testify on Capitol Hill before the Senate Banking Committee. It's an opportunity for investors to look for clues on when interest rates may start to rise. On the economic front, Investors were greeted with fresh economic reports. June retail Sales were up 0.2%. Separately, import prices rose 0.1% in June. Both were shy of expectations. TheStreet's Susannah Lee reports from Wall Street.
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