U.S. stocks dropped sharply Thursday in response to the downing of a Malaysia Airlines commercial jet over Ukraine and the Israeli ground invasion of Gaza. However, most indexes bounced back Friday to end another week in positive territory. The exception was the Russell 2000 Index, which continued its decline perhaps aided by Fed Chairman Janet Yellen's comments earlier in the week indicating that valuations in some small-cap sectors appear "substantially stretched." Treasury yields dropped last week, while gold ended the week about 2% lower.
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