Fifth Street Finance works to put the companies it lends money to on easy street. A business development firm, Fifth Street lends capital to and invests in small and midsized firms with annual revenues between $25 million and $250 million. The company typically invests $10 million to $100 million in the form of senior debt or equity per transaction. It favors established firms over start-ups and prefers to participate actively in its investments as advisors. Fifth Street's portfolio comprises more than 85 companies, many of which operate in the health care, manufacturing, IT services, and business services sectors. Formed in 2007, the specialty finance company boasts about $2 billion in assets under management.