The Paradise Papers were a joint investigation between the BBC and other news outlets around the world into a leak of financial documents which throw light on the top end of the world of offshore finance.
In this case, it revealed Jean-Claude Bastos, sometimes also known as Jean-Claude Bastos de Morais, a Swiss-Angolan and close friend of the then president's son, was chosen as the fund's asset manager.
Mr Bastos was given responsibility for investing almost all of the fund's money, and was paid accordingly - earning more than $41m in just 20 months.
process". The firm was selected, it said, because of its "exemplary performance on previous mandates with the Angolan authorities".
The fund also said that giving near total control of investments to one asset manager was part of its policy for the first 18 months only.
In November 2017, Isabel dos Santos was fired as head of oil company Sonangol. She had dismissed criticism of her appointment to the head of Sonangol in 2016, later telling the BBC she had faced prejudice.