Money shifting out of the PIMCO Total Return Fund as returns from bonds decline in 2012-2013 and this fund returns are a negative 1.2% for 2013, assets under management decline to $247.9 billion by Oct 31, 2013 from $286 billion at the end of 2012. The Vanguard Total Stock Market Index Fund takes first place in size of funds, with returns of 27% in 2013, and $288 billion in assets under management up from $210 billion at the end of 2012. Index funds are increasing in popularity with low costs. This Vanguard Fund has expenses at 4 cents for every $100 invested compared to 46 cents for the PIMCO fund, because the index funds invest in all the stocks in a particular stock index avoiding management fees.