The first trading week of 2012 was a turbulent one for the Dow Jones Industrial Average (INDEX: ^DJI). Whether it was the January Effect, investors decoupling from the European debt crisis, or favorable U.S. economic news, the Dow increased 1.2% for the week, ending at 12,359.92. Here's a snapshot of the week that was.

Source: Miseryindex.us.

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