The term 'SUPERMARKET INITIALS' can be solved by the three-letter acronym IGA, which stands for Independent Grocers Alliance. IGA is a global network of independently owned and operated supermarkets that have been in business since 1926. The company is headquartered in Chicago, Illinois and has over 5, 000 stores in more than 30 countries. IGA stores offer a wide variety of products, including fresh produce, dairy, deli, bakery, frozen foods, and general merchandise.