Gladstone Investment Corporation is a business development company focusing on investments in small to mid-sized companies in the United States. It primarily invests in mature companies through buyouts, refinancing existing debt, and offering a range of debt securities and equity investments. The company targets sectors like manufacturing, consumer products, and business services, aiming for companies with revenues of $20 million to $100 million. Gladstone Investment Corporation seeks to take minority or majority stakes, often with a board seat, and typically holds investments for around seven years.