Aldi may appear as if they were a single enterprise with certain store brands or when negotiating with contractor companies. The individual groups were originally owned and managed jointly by the brothers. Karl Albrecht, who died in 2014, retained ownership of Aldi Süd with a personal wealth of €17.2 billion that made him the richest man in Germany. The co-owners of Aldi Nord, Berthold and Theo Albrecht Jr. came close behind at €16 billion. Dieter Schwarz, owner of Lidl and Kaufland came in third, with a fortune of €11.5 billion. Aldi started to expand internationally in 1967, when Aldi Süd acquired
Perekrestok (supermarket chain) new concept. In 2017, Perekrestok managed a total of 638 stores that generated revenue of RUB 186.9 bn. In 2008, the first premium class supermarket "Green Perekrestok" opened in Rostov-on-Don. In March 2009, the first "Green Perekrestok" was launched in Moscow. Some elements of the "Green Perekrestok" concept were later incorporated into a modernisation programme that spanned the entire Perekrestok chain. In July 2017, Perekrestok launched Smart Wi-Fi, a project to create a free Wi-Fi network in 250 Perekrestok supermarkets in Moscow. The initiative enables the company to show ads and send push notifications to customers immediately after they get