Middle-market company
Authorities provide differing definitions of the middle-market or mid-market companies. While some authorities look to revenue generated by companies to define the middle market, other sources regard either asset size or number of employees as a better metric for comparing company sizes. Definitions of the middle market are generally derived by dividing the United States economy into three categories: small business, middle-market, and big business. According to figures collected by the U.S. Census Bureau, the total revenue of all U.S. businesses in 2012 was roughly $32.6 trillion. The largest of these companies, which are big businesses with revenue of over $3 billion,  make up roughly one-third of that total, and businesses with a revenue of under $100 million made up about another third of the total revenue.