Theo Albrecht the United States. Aldi and Trader Joe's, while owned by the brothers, have separate and distinct ownership and operations. Theo Albrecht and his brother Karl revolutionized the German grocery market with a low-cost business model. They had developed the supermarket as an outgrowth of their mother's small grocery store, which she had opened in 1913, in Essen, after Theo’s father had developed emphysema as a miner. Theodor learned the grocery business from his mother, in order to escape the fate of his father in the mines. He and his brother Karl developed Albrecht Diskont, one of Europe’s largest chains of
Karl Albrecht the latter's death. Golf was one of his hobbies, and Albrecht played the sport on his own golf course, the Öschberghof, which he built in 1976. He also raised orchids. In 2014, Albrecht was listed as one of the richest people in the world with an estimated net worth of . Previously, "Forbes" magazine listed him as one of the richest men in the world, with an estimated net worth in 2011 of , which ranked him 10th in its 2012 list of billionaires – making him the oldest billionaire in the Top 20 list. Albrecht was the richest person