Alfred Gantner Net Worth

Alfred Gantner has an estimated net worth of $3 billion, according to Forbes Real-Time Billionaires, Alfred Gantner profile (figures as of October 20, 2026). That is up from $2.4 billion in 2019.

Alfred Gantner is a Swiss businessman in finance and investments. He is best known as a cofounder of Partners Group, a private equity firm in Switzerland. He started the company in 1996 with Marcel Erni and Urs Wietlisbach after work at UBS and Goldman Sachs. He later served as CEO from 1996 to 2005 and chairman from 2005 to 2014. He is now on the board and still holds about 5% of the company.

His wealth comes mainly from that stake in Partners Group. The firm went public in Switzerland in 2006, and Forbes says the founders each own roughly 5% of the stock. Forbes also says Partners Group manages more than $185 billion. Gantner earned an MBA from the Brigham Young University Marriott School of Management in Utah. Outside Partners Group, he became chairman of Breitling SA in 2022 and also chairs PG3 Ltd.

How Alfred Gantner built his fortune

Gantner made his money through private equity. Before launching his own firm, he trained in banking, completed internships, and worked at UBS and Goldman Sachs. At Goldman Sachs he met Marcel Erni and Urs Wietlisbach, and the 3 started Partners Group in 1996. That company became the main source of his wealth. He remains involved through the board and through his ownership stake, which is about 5% according to company information in the background notes.

Partners Group grew from a startup into a major investment business. Forbes says the firm now manages more than $185 billion, and it went public in Switzerland in 2006. The listing mattered because the founders kept meaningful ownership. Forbes says the trio each own roughly 5% of the stock. Gantner also chairs PG3 Ltd., the founders' private multi-family office, and he became chairman of Breitling SA in 2022, adding another senior business role.

Forbes net worth updates

Forbes has tracked Gantner's fortune through several market cycles. Its World's Billionaires List put him at $2.4 billion in 2019, then $2 billion in 2020. The estimate climbed to $2.9 billion in 2021, edged down to $2.8 billion in 2022, and moved to $2.4 billion in 2023. Those swings fit a fortune tied closely to a listed private equity firm where he owns a meaningful stake.

The estimate then rose to $3.4 billion in 2024 and $3.5 billion in 2025 before easing to $3.2 billion in 2026. Forbes currently puts him at $3 billion on its real-time billionaires tracker as of October 20, 2026. His wealth is connected to private equity and to Partners Group stock, so changes in the value of that holding can move the estimate from year to year.