NETHERLANDS – Robeco, the asset management arm of Rabobank, has named Edith Siermann and Mark van der Kroft to replace chief investment officer Marnix Vreizen, who resigned last week.

Siermann and van der Kroft, currently head of the fixed income and equity departments, have both been named CIO of their respective departments. The firm said the move would mean “more focus and a flatter organizational structure”.

It said: “Separating the functions of CIO equities and CIO fixed-income from that of head of the RAM Robeco Asset_Management business unit will give more substance to management's focus.”

Siermann and van der Kroft would have “final responsibility for the performance of the mandates and funds that are managed by their departments”. The fund managers that report to them are still responsible for the performance of the funds under their management.

"We are very satisfied with the performance of our fixed-income funds,” said chief executive George Möller. “We belong to the absolute top in Europe in this field. This achievement is an example for our equity funds."

Vriezen was CIO at the firm for just over a year. His departure came amid a management shakeout.