A private-equity fund typically makes investments in companies (known as portfolio companies). These portfolio company investments are funded with the capital raised from LPs, and may be partially or substantially financed by debt. Some private equity investment transactions can be highly leveraged with
debt financing—hence the acronym LBO for "
leveraged buy-out". The cash flow from the portfolio company usually provides the source for the repayment of such debt. While billion dollar private equity investments make the headlines, private-equity funds also play a large role in middle market businesses. Such LBO financing most often comes from commercial banks, although other financial institutions, such as hedge funds and
mezzanine funds, may also provide financing. Since mid-2007, debt financing has become much more difficult to obtain for private-equity funds than in previous years. LBO funds commonly acquire most of the equity interests or assets of the portfolio company through a newly created special purpose acquisition subsidiary controlled by the fund, and sometimes as a consortium of several like-minded funds.
Multiples and prices The acquisition price of a portfolio company is usually based on a multiple of the company's historical income, most often based on the measure of
earnings before interest, taxes, depreciation, and amortization. Private equity multiples are highly dependent on the portfolio company's industry, the size of the company, and the availability of LBO financing.
Portfolio company sales (exits) A private-equity fund's ultimate goal is to sell or
exit its investments in portfolio companies for a return, known as internal rate of return (IRR) in excess of the price paid. These exit scenarios historically have been an
initial public offering of the portfolio company or a sale of the company to a strategic acquirer through a merger or acquisition, also known as a trade sale. A sale of the portfolio company to another private-equity firm, also known as a
secondary, has become a common feature of developed private equity markets. ==Investment features and considerations==