Pilar Gomez-Bravo and Alexander Mackey were appointed co-CIOs for MFS Investment Management's fixed-income unit.
The roles are new, and Ms. Gomez-Bravo and Mr. Mackey join current fixed-income CIO William J. Adams to form a leadership team of three, effective March 1.
MFS' fixed-income business has more than $94 billion in fixed-income assets across global, international, emerging markets and domestic strategies.
Ms. Gomez-Bravo and Mr. Mackey will report to CIO Ted Maloney.
The three co-CIOs will lead the fixed-income team together and, as with other co-CIO roles across the firm, will work together to make decisions, a spokeswoman said. The firm undertook a similar approach several years ago for its equity team.
Growing the fixed-income business is a "key strategic priority for MFS," the spokeswoman added. The enhanced structure will "ensure continued strong collaboration and communication across the global research platform." The expansion of the leadership team will also provide continuity over the long term, she said.
"Pilar and Alex are experienced and highly regarded members of our global research platform and have demonstrated the leadership skills necessary to help lead the department to continued success globally," Mr. Maloney said in a news release. "Together with Bill, they will lead the continued execution of MFS' multidecade strategic priority of growing its presence in fixed income markets around the world to the benefit of our clients."
Ms. Gomez-Bravo joined MFS in 2013 and is director of fixed income-Europe, fixed-income portfolio manager. Mr. Mackey joined MFS in 1998 and is a fixed-income portfolio manager. They will both retain these roles, the spokeswoman said.
MFS has a total $508.7 billion in AUM.