Medium size manufacturing & distribution, financial institutions, professional offices & all personal lines products. AJ Longo was founded in 1970 by Anthony J. Longo and is one of the largest family owned commercial insurance agencies in Southern California and has been servicing the needs to various businesses since that time. Our office moved to Pasadena in 1990 and has since been a prominent member of the community. Although A.J. Longo has a rich history in commercial insurance, we also provide personal insurance products with some of the best companies around.