
The merger will take place in 2012 after the funds conduct due diligence, and will bring AustralianSuper's total funds under management to $46 billion.
AustralianSuper chief executive Ian Silk said the union of the two funds would provide greater benefits for AGEST members and maximise their retirement savings.
"We aim to keep growing as scale enables us to deliver the best prospects for secure retirement to the greatest possible number of Australian workers," Silk said.
AGEST has 130,000 members and $4.3 billion in assets.
This is the second merger announcement for AustralianSuper in 2011, with Westscheme merging into the fund in June.



