Houston-based Main Street Capital Corporation (MAIN) is an equity and debt investment firm that specializes in serving lower middle market companies. The firm primarily invests in companies with annual revenues ranging between $10 million and $150 million, providing "one-stop" financing alternatives. Its investment portfolio includes air freight and logistics, building products, consumer finance, electronic equipment, and more. The company recently expanded with an additional office in Chojnów, Poland. Since its inception in 2007, Main Street Capital Corporation has become a significant player in financing growth-oriented businesses. It takes minority equity investments of 5 percent and up to 50 percent majority equity investments. The firm typically prefers investments ranging between $2 million and $75 million in equity investment and $5 million and $50 million per transaction in debt investment value.