Founded in 1967 by Joe Coulombe in Pasadena, California, Trader Joe's began as a small convenience store that catered to the local community. Over the years, it evolved into a grocery store known for its innovative products and engaging shopping environment. The chain expanded steadily throughout California and beyond, becoming a beloved brand with a loyal customer base. In 1979, Trader Joe's was acquired by German grocery chain Aldi, which helped facilitate its growth into new markets.