Delek Group is an Israeli conglomerate and one of Israel's largest companies, majority owned by Yitzhak Tshuva a self-made multi-billionaire. Delek Group is involved in the energy and infrastructure, with investments in upstream and downstream energy, water desalination and power plants. Delek Group' subsidiaries are also involved in insurance and financial services. Delek Group is listed on the Tel Aviv stock exchange under the ticker symbol, DLEKG, and is a member of the TA-35 Index of leading Israeli companies, as of July 2012 two of the group's subsidiaries are also listed on the TA-35 Index, Avner Oil Exploration LP and Delek Drilling LP. The group's USA operations, Delek US Holdings, Inc. (NYSE: DK), are listed on the New York Stock Exchange. On June 22, 2015, The Delek Group agreed to sell a 52% controlling stake of Phoenix Holding company (insurance and financial undertaking) to the Chinese civilian-run conglomerate Fosun International.