A lfred Gantner is a Swiss billionaire and one of the three co-founders of Partners Group, a major global private equity firm. He, along with his partners Marcel Erni and Urs Wietlisbach, founded the company in 1996. All three had previously worked together at Goldman Sachs before deciding to venture out on their own to build a different kind of private markets investment manager.

Partners Group distinguished itself by offering clients access to a broad range of private market investments, including private equity, real estate, infrastructure, and debt, often through customized portfolios. Gantner has played a pivotal role in the firm's strategic development and investment activities, serving in various executive roles, including as CEO and now as a member of the board of directors. The company went public on the SIX Swiss Exchange in 2006, and its consistent growth and strong performance have turned its founders into some of Switzerland's wealthiest individuals.