The Federal Reserve defines the middle market as businesses with between $10 and $250 million in annual revenue, while the U.S. Chamber of Commerce has a more expansive definition, including companies with between $10 million and $1 billion in this category (see chart on page 8). More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.