Description Delek Group is a conglomerate that primarily sells refined oil products and lubricants. Operating a network of more than 230 gas stations Delek Petroleum is one of the largest gasoline retailers in Israel. Its Delek US Holdings operates about 500 MAPCO-branded gas stations in the US (in Tennessee). Delek also operates about 1,300 gas stations in Europe. Delek Investments and Properties acts as holding company for subsidiaries in the energy, infrastructure, automotive, media, insurance, and finance sectors. Delek Group has spun off its real estate unit (Delek Real Estate) but retains a 64% share. The Delek Group is controlled by Israeli mogul Yitzhak Tshuva, owner of New York's Plaza Hotel.