Swiss private investor Partners Group Holding AG is looking to raise $4 billion for its latest flagship secondaries fund, Secondaries Investor reported, citing two sources familiar with the matter.

The Partners Group Secondary 2020 fund was launched at the end of the third quarter, according to one of the sources.

The investment vehicle is 43% larger than its predecessor, which pulled in €2.5 billion in 2016, the news outlet noted, citing its own data.

A Partners Group spokeswoman did not comment on the matter, according to the report.