Shares of Con-way Inc. retreated $1.72, or 3.6 percent, to $46.38 in afternoon trading on the New York Stock Exchange. On the Nasdaq, shares of Celadon Group Inc. fell 78 cents, or 4.1 percent, to $18.17, while shares of Saia Inc. lost $2.05, or 7.4 percent, to $25.53.
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Trucking stocks brake on oil prices (Sharewatch) 
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