Stocks to Watch: KB Home, Vivus, Expedia

Sept. 21 (Bloomberg) -- Bloomberg's Josh Lipton reports on today's top stocks that are moving. He speaks on Bloomberg Television's "Market Makers." (Source: Bloomberg)
Fed's Yellen Speaks About U.S. Economy, Monetary Policy
20:11 - Federal Reserve Chair Janet Yellen speaks about the U.S. economy and monetary policy. Yellen said she still expects to raise interest rates this year if the economy meets her forecasts, with a gradual pace of tightening to follow. She speaks in Providence, Rhode Island. (Source: Bloomberg)
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