Marc Siedner, who left Pacific Investment Management Company (PIMCO) in January, is returning to the firm as new chief investment officer non-traditional strategies and head of portfolio management in New York Office, effective 12 November 2014.

In addition, Seidner has also been appointed as new managing director and portfolio manager.

Seidner will report to Daniel Ivascyn, group chief investment officer.

In his new role, Seidner will work together with Ivascyn overseeing several non-traditional investment teams. He will also take over generalist portfolio management responsibilities Siedner is rejoining the company after its co-founder Bill Gross has departed from Pimco.

Seidner, who served as a senior portfolio manager at PIMCO from 2009 to 2014, was a member of the PIMCO Investment Committee and managed a range of portfolios that included PIMCO total return separate accounts.

Meantime, Curtis Mewbourne, current head of PIMCO’s New York money management group, will also return to Newport Beach office as senior member of the portfolio management team.

Also, Mewbourne will continue to serve his role as head of the insurance, diversified income and sector fund separate account teams, and will take over additional duties in mid-2015.

Ivascyn said: "Marc is a talented, highly experienced investor with broad market expertise and a deep knowledge of PIMCO, and his return will further enhance our global investment platform. Marc will be able to seamlessly contribute to our investment process and efforts on behalf of PIMCO’s clients."