T homas von Koch is a Swedish billionaire who is a key partner at the private equity firm, EQT. The firm was founded in Sweden in the 1990s by the influential Wallenberg family and has since grown into one of the largest and most successful private equity firms in the world. He joined the firm in its early days and rose through the ranks to become its longtime CEO and managing partner. He was the architect of the firm's global expansion and its transformation into a major player in the global private equity industry.

Under his leadership, EQT has raised and invested tens of billions of dollars across a wide range of industries and has a strong track record of successful deals. He has since stepped down as CEO but remains the deputy managing partner and a major shareholder. His billion-dollar fortune is derived from his large stake in the highly successful and publicly traded private equity firm he was instrumental in building.