Pimco's outflows were a rough patch, but the firm is now moving ahead, its founder and chief investment officer Bill Gross said Thursday.
The Pimco Total Return Fund posted $4.3 billion in net outflows in May, its 13th straight month of investor withdrawals, according to Morningstar data. The fund has seen $59.6 billion in outflows since May of last year.
"Pimco had a rough patch, I guess, towards end of 2013, now it's not a rough patch," Gross said in an interview with CNBC's "Street Signs."
"We're moving ahead. I couldn't be more confident by the end of this year that Pimco will be close to the top of the pack in terms of the bond market. And those that are taking money out, well, hopefully they will be putting it back in real soon."
Gross pointed out that the fund is outperforming.
"Look in May and look in early June. And watch our 12-month numbers … over the next week or two, they're going to be in the 75 percentile."
Gross also addressed the European Central bank's move to cut interest rates, calling it "rather extraordinary."
The bank's historic imposition of negative interest rates on banks for their deposits was significant in terms of shock value, Gross said. However, he thinks the program that allows banks to borrow at 25 basis points from the ECB for four years is more important since those banks can likely loan that money out for 1 to 1.5 percent.
"It's a way to basically recapitalize banks as opposed to inflate assets. To the extent that it's successful, then the euro-land economy can grow as opposed to stagger."
—By CNBC's Michelle Fox. Reuters contributed to this story.