Karl Albrecht, the reclusive German businessman who became one the world's wealthiest people after co-founding the Aldi discount supermarket chain in the 1960s, has died, Bloomberg reported. Albrecht, who was 94, died in Essen, Germany, on July 16 and was buried in a private ceremony today. He was the second-richest person in Germany and the 35th-wealthiest in the world, with an estimated fortune of $20.9 billion, according to the Bloomberg Billionaires Index. With his brother, Theo, he built a business that ranked as the world's 11th-biggest retailer in 2013, according to London-based research company Planet Retail. There are five Aldi stores in Greater Des Moines.