Trader Joe's is an American chain of grocery stores headquartered in Monrovia, California. By 2015, it was a competitor in "fresh format" grocery stores in the United States. It is owned by a German company, Aldi.
By November 2019, Trader Joe's had over 503 stores nationwide in 42 states and Washington, D.C.
The first Trader Joe's store was opened by founder Joe Coulombe in 1967 in Pasadena, California. It was owned by German entrepreneur Theo Albrecht from 1979 until his death in 2010, when ownership passed to his heirs.