BlackRock Kelso Capital Corporation is a private equity firm specializing in investments in middle market companies. The firm invests in all industries. It prefers to invest between $10 million and $50 million and can invest more or less in companies with EBITDA or operating cash flow between $10 million and $50 million. The firm invests in the form of senior and junior secured, unsecured, and subordinated debt securities and loans including cash flow, asset backed, and junior lien facilities and equity securities. It's equity investments can be structured in the form of warrants, preferred stock, common equity co-investments, and direct investments in common stock. The firm debt investments are principally structured to provide for current cash interest and to a lesser extent non-cash interest, particularly with subordinated debt investments, through a pay-in-kind (PIK) feature. It can also make non-control investments. Blackrock Kelso Capital Corporation was founded in 2005 and is based in New York, New York with an additional office in Chicago, Illinois.