Julian Pendock left his role as chief investment officer of the London CIV, a spokesman said.
The £14 billion ($19 billion) asset pool consisting of 32 local authority pension funds of London boroughs will announce a replacement in due course, the spokesman added.
It could not be learned by press time why Mr. Pendock left or his future plans.
He joined London CIV in August 2015. He was previously CIO at Senhouse Capital and senior fund manager at Bedlam Asset Management,