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Affiliated Managers to acquire AQR stake Affiliated Managers Group Inc. , a US company that owns stakes in 18 money management firms, acquired an equity interest in AQR Capital Management, its fifth transaction this year. AQR, based in Greenwich, Conn., is a quantitative manager and hedge fund company that manages about \$12 billion, Beverly-based AMG said in a statement. AQR's management will hold the remaining equity ... 