The approval is the final step in a $480m deal between Carlyle and EQT.
The firm, which launched in 2011, employs a sale-leaseback strategy in the US and Europe.
The firm expects to hold a final close in October.
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The firm’s joint venture with CPPIB and Stone Point, MerchCap Solutions, helped to arrange some of the $580m in commitments for the new vehicle.
The firm is more than half way to its $750m target for American Securities Opportunities Fund III.
The New York firm’s previous fund, a $548 million 2011 vintage, also closed above target.
The Los Angeles pension system invested in the local mezzanine fund that is targeting $1.5bn.
Chicago-based Midwest is raising its fifth fund with an SBIC vehicle.
An affiliate of Singaporean investment firm Temasek will purchase up to $60m in notes.
The €310m fund is 3i Debt Management’s first new-issue CLO in Europe since its inception.