Partners Group Holding AG is an investment management company, which provides management services of private equity and alternative investment funds. It operates through the following segments: Private Equity, Private Debt, Private Real Estate and Private Infrastructure. The Private Equity segment offers financing stage, which refers to the stage of development of a company at the point of investment. The Private Debt segment allows investors to access investment opportunities that are not available in the public corporate bond market. The Private Real Estate segment engages in investing in housing complexes, office space, shopping centers, and industrial buildings. The Private Infrastructure segment comprises of investments in assets within different infrastructure sectors, such as transportation, communication, power conventional, power renewable, energy infrastructure, water, social infrastructure, and waste management. The company was founded by Alfred Gantner, Marcel Erni, and Urs Wietlisbach in 1996 and is headquartered in Baar, Switzerland.