Susan Orr was appointed co-deputy CIO alongside Greg Clerk at the A$115 billion ($70.7 billion) Hostplus, a spokesperson confirmed.
Orr joined the superannuation fund in June as head of investment research and real assets. The spokesperson declined to comment on her replacement.
She succeeds Con Michalakis who left the Melbourne-based super fund to join the $46 billion Funds SA, Adelaide.
Orr was previously head of infrastructure research at consultant firm JANA Investment Advisers, which has $1.3 trillion in funds under advisement.