In a statement issued Friday, the Alberta Investment Management Corp., said it has begun a search process to "ensure a new leader is in place to guide the organization into the next phase of its evolution."
De Bever will remain as chief executive officer until the search is completed.
"A critical part of the CEO's job is to effectively pass the torch to the next generation of leadership. I am confident that AIMCo is very well positioned for continued success," said de Bever, who is expected to be on the boards of a number of portfolio companies and advise AIMCo on a number of issues.
AIMCo, is one of Canada's largest and most diversified institutional investment managers, investing behalf of 27 pension, endowment and government funds Alberta, including the Alberta Heritage Savings Trust Fund.