The company is a Business Development Company registered as a closed-end investment company and regulated investment company that generates income and capital appreciation by investing in private and thinly-traded U.S. middle-market companies. It invests primarily in senior secured debt, unitranche loans, unsecured debt, and selected equity stakes of privately-held middle-market businesses, as well as collateralized securities and structured products, with up to 30% of assets potentially in non-U.S. securities. Revenue is generated through interest income from debt investments, capital gains from equity dispositions, and fees; the company finances investments through equity capital and leverage including secured credit facilities and debt securities, and is externally managed by an affiliate of The Carlyle Group.