Pimco will not be changing its premier fund in the wake of Bill Gross' abrupt exit.
Scott Mather, Pimco's CIO for U.S. core strategies and manager of its Total Return Fund, told CNBC that the fund is well positioned, and will not see major strategic changes.
"We're not changing the fund," Mather said in an interview with "Street Signs." "It's been a team process here at Pimco. I and my colleagues have been involved in forming those investment themes which are at work in the Total Return Fund ... for 10 to 20 years."
The firm's flagship fund has suffered several major outflows since Pimco co-founder Gross' sudden departure last month.
The company said the Total Return Fund saw about $23.5 billion leave in September—which at the time represented more than 10 percent of its total net assets, according to Morningstar.
Read More Pimco Total Return Fund outflows estimated at $23.5B in September
The fund has not had any difficulty repositioning in the wake of these outflows, Mather said, adding that there has been "no problem keeping the fund on target."
Furthermore, Mather said, he did not anticipate seeing any more significant outflows, as current clients "already know the process, they already know the leadership team, and so they're deciding to stick with us."
Pimco, which is owned by Allianz, said earlier this month that its flagship fund is "is well positioned to meet potential redemptions."