CHICAGO--(EON: Enhanced Online News)--Northern Trust announced today that U.S. institutional investment plan sponsors in the Northern Trust Universe gained 4.5 percent at the median in the fourth quarter of 2011, with a surge in U.S. equities creating a positive ending to a mixed year for most plans. The Northern Trust Universe represents the performance of about 300 large institutional investment plans, with a combined asset value of approximately $689 billion, which subscribe to Northern Trust
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