Fifth Street Asset Management

Fifth Street Asset Management

Leonard Tannenbaum founded Fifth Street in 1998, initially focusing on debt financing for small- and mid-sized companies overlooked by larger institutional lenders. The firm scaled rapidly through the post-2008 credit cycle by managing Fifth Street Finance Corp. and Fifth Street Senior Floating Rate Corp., both publicly listed business development companies. Tannenbaum's early career included investment banking at Merrill Lynch and distressed debt investing, which shaped the firm's credit-first DNA. Fifth Street deployed capital predominantly through senior secured loans, mezzanine debt, and minority equity co-investments in sponsor-backed middle-market companies. Its portfolio spanned healthcare services, enterprise software, industrial technology, and media. Known positions included investments in Integrity Marketing Group and Service Champions. The firm originated directly through private-equity sponsor relationships and maintained a geographic focus on US-based companies with $10 million to $100 million in EBITDA. At its peak, Fifth Street managed approximately $6 billion in assets across its BDCs and private funds (per public filings, 2014). The firm employed over 70 professionals from its West Palm Beach headquarters with additional origination offices. September 2017: Fifth Street announced the sale of its management contracts to Oaktree Capital Management following a prolonged shareholder battle and declining fee income tied to portfolio credit deterioration. Fifth Street's structural differentiator was its publicly traded BDC management model, where executive compensation depended directly on asset-gathering fees rather than permanent capital lock-ups. This architecture created an inherent tension between portfolio quality and asset growth — incentivizing leverage in a way that partnerships or closed-end funds structurally avoid. When credit losses mounted and dividends were cut, shareholders punished the stock, forcing a management contract sale that effectively unwound the firm.