Private equity involves investing in companies that are not publicly traded, from early-stage startups to established businesses, with the aim of growing those companies’ value and eventually selling them for a profit, either to another private or strategic buyer or through an initial public offering (“IPO”).1
Private equity is a common form of accessing private markets and dates to the Industrial Revolution.2 Over time, it has evolved into a strategic allocation in portfolios, reflecting its growing role in long-term investment strategies.
The objectives of private equity investing are straightforward: buy, improve and sell at a higher valuation.
The private equity manager, commonly referred to as the General Partner (GP) or lead sponsor, typically takes a controlling ownership stake in a company and is responsible for driving strategic change. GPs typically take an active ownership role, influencing operational decisions, capital allocation, leadership changes and long-term planning to enhance value.
Private equity strategies differ depending on the target company’s stage of development, the level of ownership or control, and the purpose of the investment.
Four primary types are:
These four stages reflect a continuum of risk and return, as outlined below, allowing investors to construct portfolios aligned with their objectives and risk tolerance.
Exhibit 1: The four types of PE strategies
The above table is for illustration purposes only. It serves as a general summary and is not exhaustive.
Investors generally access private equity in three ways:
Early in a fund’s investment period, as capital is deployed and fees are paid while portfolio companies are still being improved, investor returns may be negative. The fund’s net cash flow generally begins to increase in the later years when investments begin to mature and are sold, resulting in distributions. This progression from initial negative return to ultimately positive return is known as the J-curve effect.
Co-investments allow investors to gain exposure to a specific company as a co-owner. Because capital is deployed into a specific investment rather than committed to a blind pool of future opportunities, co-investments typically provide faster market exposure than primaries and can help mitigate the early phase of the J-curve. Co-investments can also enhance transparency and offer a two-tiered due diligence approach, first by the GP and then by the co-investor. In addition, they often carry lower fees than traditional private equity fund investments.
However, co-investments require significant underwriting expertise and internal resources to evaluate potential opportunities. They also involve higher concentration risk, as investors are exposed to a single company rather than a diversified portfolio, and execution risk, as not all transactions ultimately close.
Secondary interests are often purchased at a discount to the asset’s net asset value (NAV), generally not due to impairment in the underlying investments, but because of the illiquidity of the LP stake and the seller’s need to receive capital back sooner than originally anticipated.
Secondaries provide more immediate exposure to underlying portfolio companies and can reduce the impact of the J-curve by offering access to investments that are closer to realization or exit.
Exhibit 2: Building blocks of private equity investing
The above is for illustrative purposes only and is not exhaustive.
Exhibit 3: US public markets have been shrinking, while US private markets have been growing
Source: U.S. Census Bureau - Center for Economic Studies - Business Dynamics Statistics (2022) and World Federation of Exchanges database; for more information on the World Federation, please refer to the Important Notes. Both sources, represents the latest data as of 2022 as derived on 2 April 2025. The graph denotes the growth or decline for both US public and private companies from 1988 until 2022. Past performance is no guarantee of future performance.
As in public equities, investors in private equity are subject to market risk and operational risk. However, private equity carries additional risks including the illiquidity of the underlying assets, limited regulatory oversight and fewer reporting requirements relative to publicly traded counterparts. Investors expect a higher return for their private equity investments in exchange for these heightened risks.
Private equity offers investors access to a broad and growing universe of companies beyond public markets, with the potential for enhanced returns driven by active ownership and manager skill. While investments require a longer time horizon and involve higher illiquidity and complexity, these characteristics have historically been compensated through diversification benefits and attractive risk‑adjusted outcomes. For investors able to tolerate these tradeoffs, private equity can serve as a powerful complement to public equity within a diversified portfolio.