The mandate is in line with the $20 billion super fund's strategy of using new managers and more aggressive forms of investments, UniSuper chief investment officer David St John said.
"The appointment of Russell reinforces UniSuper's commitment to supporting innovative investment strategies while retaining broad manager specification as well as appropriate risk management strategies," St John said.
The Russell Australian Select Holdings Fund was launched in April to enhance the performance potential of its flagship multi-manager Australian equities fund, the Russell Australian Shares Fund.
The fund is designed to create additional alpha by leveraging the best stock selection ideas of its fund managers. It opened to retail investors last week.