The firm also expects to hold a first close for its tenth real estate secondaries strategy by year-end at more than 50% of its initial $2.5 billion target.
Following the establishment of a dedicated GP-led secondaries team earlier this year, the London-based firm has reportedly secured around €1 billion at first close.
"AGSS highlights the increasing demand for tailored GP solutions in today's market environment and the innovative leadership of the Ares Secondaries platform," said Co-President Blair Jacobson.
Openstone Infraworld will initially target four funds managed by Macquarie, Partners Group, and Ares, including strategies focused on infrastructure secondaries.
The alternatives manager also gave updates on the fundraising status of several other secondaries strategies spanning private equity, GP-leds, venture capital, and infrastructure.