Stocks fall; Dow has first weekly loss since June

FILE - In this Friday, June 29, 2012 file photo, specialists Frank Masello, left, and John T. O'Hara work on the trading floor of the New York Stock Exchange in New York shortly before the closing bell. Global stock markets were choppy Friday Aug. 9, 2013 after China reported improved but still tepid economic data.  (AP Photo/David Karp, File)
FILE - In this Friday, June 29, 2012 file photo, specialists Frank Masello, left, and John T. O'Hara work on the trading floor of the New York Stock Exchange in New York shortly before the closing bell. Global stock markets were choppy Friday Aug. 9, 2013 after China reported improved but still tepid economic data. (AP Photo/David Karp, File)
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