AustralianSuper expects to grow to over two million members and $50 billion worth of member assets, after IBM selected it as its default superannuation fund.
The transfer of IBM Super members to AustralianSuper, subject to due diligence, will add 15,000 members and increase funds under management (FUM) by $1.7 billion.
An AustralianSuper spokesperson said the deal was the "largest ever corporate outsourcing in history".
AustralianSuper chief executive Ian Silk said the fund's increasing scale allowed it to provide sustainable results for members.
"IBM's decision is an endorsement of our members-first strategy," he said.
AustralianSuper merged with Westscheme in July 2011, adding $3.4 billion to AustralianSuper's FUM, and is also set to join up with AGEST Super.
If all goes according to plan, IBM Super members and employees will transfer to AustralianSuper on 1 November this year.
The super fund announced that Gregory has been appointed to its executive leadership team, taking on the fresh role of chief advice officer.
The deputy governor has warned that, as super funds’ overseas assets grow and liquidity risks rise, they will need to expand their FX hedge books to manage currency exposure effectively.
Super funds have built on early financial year momentum, as growth funds deliver strong results driven by equities and resilient bonds.
The super fund has announced that Mark Rider will step down from his position of chief investment officer (CIO) after deciding to “semi-retire” from full-time work.