In September 2008, Lord Fink came out of retirement to act as chief executive of International Standard Asset Management (ISAM) in partnership with Lord Levy. Appointed chairman of ISAM in2015, he retired from its board in December 2018.
In 2013, Lord Fink featured on web reality TV show HF Lions' Den, when Lord Fink interviewed three emerging hedge fund managers, and allocated $25 million in investment between the three funds.
Lord Fink serves on the board of Marex Spectron and was a chairman and largest shareholder of Zenith Hygiene Group for ten years, which was sold to Bain Capital in 2018.
Lord Fink is a seed investor in Ecometrica, a leading environmental software business headquartered in Edinburgh. He is an early investor in New Forests Company, among the largest sustainable forestry businesses in Africa operating in Uganda, Tanzania and Rwanda. The company has become a market leader in the provision of sustainable wood and FSC-certified transmission poles throughout East Africa.