With a net worth of $3.1 billion, Santos is Africa’s richest woman. She is the eldest daughter of the Angolan president Jose Eduardo dos Santos and has amassed her fortune through investments in both Portugal and her native Angola. Forbes claims that her father transferred stakes in several Angolan companies to her, but her representatives deny this. Regardless, in Angola, she holds a 25% stake in Unitel, the nation’s largest mobile phone network, and another stake in the Banco Bic bank. In Portugal, she owns a 7% slice of oil and gas firm Galp Energia, and 18% of Banco BPI, which is Portugal’s fourth-largest bank. She is also a controlling shareholder of Portuguese cable TV and telecom firm Nos SGPS. However, this has not come without a large amount of controversy, as in October 2015 the European Parliament called for an investigation into her investments in Portugal, questioning their legality. In their statement, they claimed: “…the method of payment” – a transfer of funds by the Angolan government – “raises the possibility the Angolan State is indirectly and illegally financing private investments of his daughter Isabel dos Santos.” However, her spokesperson has denied any wrongdoing.