Packed Trading Week Kicks Off

New York City Mayor Michael Bloomberg speaks with Louis Pastina, executive Vice President of NYSE Operations on the floor of the New York Stock Exchange on Oct. 31, 2012 Photograph by Stan Honda/AFP/Getty Images

10 a.m., Oct. 31, 2012 — When New York Mayor Michael Bloomberg rang the opening bell at the New York Stock Exchange this morning, it ushered in what is likely to be one of the most concentrated weeks of activity traders have ever seen.

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