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This content was originally published by MarketWatch.com - Top Stories. Original publishers retain all rights. It appears here for a limited time before automated archiving. By MarketWatch.com - Top Stories
A bout of volatility returned to financial markets with a vengeance last week, disrupting a nearly uninterrupted climb to records for U.S. stock indexes and raising questions about the path for Wall Street headed into a hornet's nest of challenges for investors.