Investors added $27.7 billion to long-term open-end funds in October, according to data fromMorningstar. Taxable-bond funds led the way with inflows of $29.6 billion, while U.S.-stock funds saw outflows of $8.3 billion.

PIMCOtopped all firms with inflows of $8.1 billion in October, led byPIMCO Total Return Bondwhich took in $2.4 billion alone. And theDoubleLine Total Returnfund took in $1.9 billion during the month and $17.9 billion year to date, making it the most popular mutual fund so far this year, according to Morningstar.

But alternative funds have had the fastest organic growth rate of any asset class in 2012, collecting $12.4 billion in year-to-date inflows.