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US stocks move higher as Fed's Yellen signals caution

Investors welcomed the latest signals from the Federal Reserve on interest rates, sending U.S. stocks higher in midday trading Wednesday. In her semiannual report to Congress, Fed Chair Janet Yellen said the central bank would likely move more slowly to raise interest rates if the economy disappoints. Health care and technology stocks were among the biggest gainers, helping set the market up for its first gain after three days of losses.

KEEPING SCORE: The Dow Jones industrial average rose nine points, or 0.1 percent, to 16,023 as of 12:10 p.m. Eastern Time. The Standard & Poor's 500 gained 12 points, or 0.7 percent, to 1,865. The Nasdaq composite added 56 points, or 1.3...