Was the latest round of stimulus by the Fed, known as QE3, just about keeping rates low and encouraging people to buy homes? Some say it was also a push for investors frustrated by the low-yielding returns in ultra-safe securities like CDs and money-market funds to stick their necks out a little farther and put their money in something with a bit more risk. Fed Chairman Ben Bernanke is hoping that investors moving some money around will get the economy moving, too.

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