Bill Gross

The flight from the Pimco Total Return Fund continued apace in April with investors withdrawing another $3.1 billion, the 12th straight month of outflows from the world's largest bond fund, run by Bill Gross.

The fund has now seen a total of $55.26 billion in net outflows since last May, according to Morningstar data on Thursday. The Pimco Total Return Fund had $230 billion in assets under management at end of April, down from a peak of $292.9 billion in April 2013.