Ardian has amassed roughly $18 billion for Ardian Secondary Fund VIII and expects to close fundraising for the vehicle as early as April, Bloomberg News reported, citing people with knowledge of the matter.

The vehicle will acquire private equity stakes, including interests in large U.S. and European buyout funds from existing backers, the people told the news outlet.

The secondaries fund would be the European asset manager's largest capital pool to date. Ardian reportedly is still collecting capital commitments for the fund and the final size might still change.

An Ardian representative declined to comment, according to the March 30 report.