Stocks Finish Lower

Traders Monday eyed more discouraging news on the global economy and credit markets, and news of the Merck-Schering Plough merger

U.S. stock indexes closed lower Monday, led by weakness in tech issues and a drop in Merck & Co. (MRK), which offered to acquire Schering-Plough (SGP) for $41.1 billion. Trading was choppy from the outset Monday as investors' economic worries held sway.

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