H1 was the second-best half-yearly total for secondaries fundraising with Coller Capital, LGT Capital Partners and others holding sizeable closes.
The South Korean public pension fund has backed Brookfield's latest investment strategy.
The news comes as the firm eyes the target of its latest secondaries fund seeking $3.5bn.
Ares' close of the Landmark Partners acquisition this quarter, along with strong fundraising, helped boost the firm's AUM to nearly a quarter trillion dollars.
The firm has also closed on nearly $800m for its debut dedicated GP-led strategy.
Venture capital and infrastructure secondaries made the top 10, while nearly a quarter of all capital closed is payable to Coller's recent effort.
Preferred equity volumes more than doubled in 2020 as GPs sought capital to shore up balance sheets and make acquisitions amid market volatility.
The $327bn asset manager and adviser is increasing its focus on alternatives, having formed a strategic partnership with Hamilton Lane in March.
Idinvest Secondary Fund IV is already 36% deployed in the European mid-market, which Eurazeo has described as 'under-exploited'.
SOF IV has raised 30% more than its 2017-vintage predecessor from LPs such as San Bernardino County Employees' Retirement Association.
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