Is Trader Joe owned by Aldis?

It's the other way around. Trader Joe's is owned by Aldis. Aldis is a German chain store started and owned by two German brothers with the last name Albrecht. Aldis is a shortened term for Albrecht Discount. The brothers researched a way to enter the market in the US when they ran into Joe Coulombe, the founder of Trader Joe's. Joe sold ownership to the Albrecht brothers but remained in charge of the US chain for several years.