Pensioenfonds Vervoer, Amsterdam, appointed Achmea Investment Management as its OCIO manager, a spokeswoman said.
The €28 billion ($31 billion) pension fund's contract with Robeco expires at the end of 2019.
Pensioenfonds Vervoer selected Achmea for its breadth of services and offerings to comparable sized clients, the spokeswoman said.
"Achmea IM is a fiduciary manager, with asset management as additional service," the spokeswoman added. "We are convinced that Achmea IM will continue to invest in all aspects of integrated asset management."
Robeco managed Pensioenfonds Vervoer for the past eight years.