.1 billion , or 4% ( 4 % ) , from year-end 2011 . cash management products include taxable and tax-exempt money market funds and customized separate accounts . portfolios may be denominated in u.s . dollar , euro or british pound . at year-end 2012 , 84% ( 84 % ) of cash aum was managed for institutions and 16% ( 16 % ) for retail and hnw investors