Gladstone Investment Corporation is business development company, specializes in lower middle market, mature stage, buyouts; refinancing existing debt; senior debt securities such as senior loans, senior term loans, lines of credit, and senior notes; senior subordinated debt securities such as senior subordinated loans and senior subordinated notes; junior subordinated debt securities such as subordinated notes and mezzanine loans; limited liability company interests, and warrants or options. The fund does not invest in start-ups.