What is private equity? How it works, with Asia data

A takeover headline, a pension fund’s allocation, a founder selling to “a financial buyer”: each is private equity at work. This page strips the term back to its parts, the money, the people who manage it, the companies it buys and the way it comes out again, as the first stop in the fundamentals section. Asia and Hong Kong run through every section, because that is where the rules and the deal flow this site follows are found.

Key takeaways

• Private equity is equity raised by companies privately rather than through public fundraising¹.
• Investors rarely buy companies themselves. They join a fund, a pooled vehicle that the adviser invests on their behalf².
• Most funds are limited partnerships with a ten-year life¹. Each company is held for a fraction of that: more often three to five years¹.
• The manager earns a fee, typically 1-2% a year, and carried interest of circa 20% of profits above a hurdle¹.
• Whether private equity beats listed shares is contested. Evaluations of the returns are mixed³.
• Fund interests are hard to sell. An investment is often illiquid and may need holding for several years before any return is realised².
• In 2024 Hong Kong ranked second in Asia, after Mainland China, by capital under management in private equity funds, at US$229 billion⁸.

Private equity in plain terms

Private equity is, as the name suggests, equity raised by companies privately rather than through public fundraising¹. In the encyclopaedic definition it is stock in a private company that does not offer stock to the general public³. A listed company sells shares to anyone with a brokerage account. A private one does not, and for the vast majority of private-equity investments there is no listed public market³.

“Equity” needs one line of definition. It means a shareholder’s stake in a company, valued after all debt has been paid⁴. A private equity firm invests by buying shares and expects them to be worth more than the original investment by a specified date⁴. The objectives are straightforward: buy, improve and sell at a higher valuation⁵. The buyer at the end is either another private or strategic owner or the public, through an initial public offering⁵.

The phrase also does double duty. In everyday speech “private equity” can refer to the investment firms rather than the companies in which they invest³. When a newspaper says “private equity bought the chain”, it means a firm and the fund it manages, not a type of share.

A fair question is why this counts as an industry and not just a rich person buying a business. Regulators draw the line like this, in IOSCO’s report on private equity conflicts: private equity firms can typically be differentiated from other private investors that take controlling stakes, such as individual large investors or family firms, because they raise capital on a regular basis in sequential fund raisings, not on an ad hoc basis for individual deals, and deploy it in multiple companies with common investment objectives¹. Repetition is the business model: the firm raises a fund, invests it, returns it, and then goes back to the same investors for the next one.

Who is who: investors, firm, fund and portfolio company

Five terms recur in every private equity story, and the table fixes them before the jargon arrives. The pages on GP and LP roles and on how a fund works go deeper on each.

An investor joins one specific fund and not the firm itself, so it benefits only from investments that fund makes³. A firm may have a number of active funds at any time, each formed as a separate legal entity with separate general partners¹. The firm and its staff will typically also invest their own capital alongside the fund’s, generally around 2-5% of the total committed capital, and more in larger funds¹. That personal stake is meant to keep the manager’s interests close to the investors’.

Who the investors are changes the shape of the whole market. The majority of private equity investors are institutional and sophisticated market participants, although retail exposure can occur through specific structures that pool retail funds¹. One US rule sits behind that sentence. A fund’s adviser may be registered with the SEC while the private equity funds themselves are not, so the funds carry no regular public disclosure requirements². That is a United States rule, and Hong Kong and Singapore draw the line differently.

How a private equity firm makes money for its investors

The manager buys equity stakes using a combination of equity and debt financing and aims to generate returns over a target horizon set by the fund and its strategy³. There are four main levers for driving returns: revenue growth, margin expansion, free cash flow generation or debt paydown, and expansion of the valuation multiple³. Put differently, returns are created through one or a combination of three factors: debt repayment or cash accumulation from operations, operating improvements that increase earnings, and selling the business for a higher price than was originally paid³.

Leverage deserves its own paragraph because it drives so much of the debate. Debt financing increases an investment’s return on equity by reducing the amount of initial equity required to purchase the target³. In a leveraged buyout, the acquisition debt is often non-recourse to the financial sponsor and has no claim on other investments the sponsor manages³. Banks traditionally supply that debt, often partly or fully redistributed to other banks and institutional debt market participants¹.

Worked example (our arithmetic)

This is an invented illustration, not a real deal. The mechanics are the standard ones: debt alongside equity, with the company’s cash flows servicing the debt¹⁰. Every amount is ours (assumed, with our arithmetic), in round numbers of an unnamed currency. A fund buys a company for 100, paying 40 of its investors’ equity and 60 of borrowed money. Over five years the company’s cash flow repays 20 of the loan, leaving 40 owed. The fund then sells the company for 130 and settles the loan. Interest, fees and taxes are left out.

The same company sold at the same price returns 2.25 times the equity with debt and 1.3 times without it (our arithmetic). The effect cuts both ways: if the sale price were 80, the debt-free buyer would get back 0.8 times its money, while the leveraged buyer would have 80 minus 40, or 40, for 40 of equity, a multiple of 1.0 times (our arithmetic). Read the gap as the direction of the effect, not a forecast. Part of the real-world profit comes from turning the company around, and part from a general rise in share prices in a buoyant market, the latter often being the greater component³. And buy-out operations can go wrong, in which case the loss is increased by leverage just as the profit is when all goes well³.

Private equity strategies at a glance

The word “strategy” in private equity means the stage and type of company a fund targets. A firm’s investment strategies are defined by the stage of development and capital requirements of the portfolio companies it intends to invest in¹. Commonly they are early stage or venture capital, growth capital and late stage or leveraged buyouts, with a growing number of funds specialising in infrastructure, distressed debt and private investment in public equity¹. The strategies are not rivals: they require different skills and each has a place in a company’s life cycle⁴.

Venture capital is private equity invested in an early-stage startup⁴. Venture capitalists typically do not require a majority share of over 50 percent, which can be attractive to founders⁴. Growth equity is capital for an established, growing company that needs funding to grow⁴; it sits between early-stage venture capital and mature buyouts in its risk and return profile⁵. Buyouts occur when a mature company, typically public, is taken private and purchased by a private equity firm or its existing management team⁴. The type makes up the largest portion of funds in the private equity space⁴. The two main kinds are management buyouts, where the existing management team buys the company’s assets and takes the controlling share, and leveraged buyouts, which are funded with borrowed money⁴.

Other strategies

The edges of the category are looser. A special situation is an investment in an established company facing operational, financial or other strategic challenges⁵. Distressed investing covers the securities of financially weak companies³. Infrastructure funds invest in public works made as part of a privatisation initiative by a government entity³. A fund of funds puts its money into other private equity funds³. A search fund is a vehicle through which an entrepreneur, the “searcher”, raises money from investors to acquire an existing small business³.

Secondary deals work in the other direction: they buy existing private equity assets³. Sellers of fund interests sell not only the investments in the fund but also their remaining unfunded commitments³. The buyout and growth equity page sets the two largest strategies side by side, and the investment approach page follows a deal from first look to exit.

Private-equity firms: who runs the funds

A private equity firm is the management business, and the funds are the partnerships it runs. The firm that is easiest to name is not necessarily the best: size rankings measure money raised, not skill. Industry rankings such as the PEI 300 from Private Equity International order firms by direct-investment capital raised, and they give no indication of relative investment performance³.

The firm’s job differs at each stage of a fund’s life. The investment professionals identify companies, an investment committee decides, and external advisers help with diligence¹. After the purchase comes the part that separates private equity from owning a few shares of a listed company: the typical strategy is to take a controlling interest in the portfolio company and engage actively in its management and direction in order to increase its value². Other funds make minority investments in fast-growing companies or startups, where the influence is smaller².

The life of a fund and investment timescales

Private equity funds are typically close-ended and raised to have a life span of ten years¹. Close-ended here means the fund stops taking new investors after its final close³. Most funds can extend, typically with investor agreement, by up to three 1-year extensions¹. The table follows one fund through its life.

Investors do not pay in on day one. Committed capital is not drawn down at the point of agreement but is available to be drawn down by the manager throughout the life of the fund as opportunities appear¹. Once investors have signed, they are obliged to remain committed, although the manager is typically permitted to call capital for new investments only during the investment period¹. Afterwards, capital calls are usually allowed for expenses, management fees, follow-on investments and repayment of permitted indebtedness¹. When the fund reaches its fundraising target it has a final close, and after that point new investors normally cannot join, unless they buy an interest on the secondary market³.

Investment timescales

The fund lives for ten years, but each company does not. The actual time a fund holds an investment is generally well below ten years and more often around three to five years¹. The holding period for a given company runs on a separate clock from the fund’s, which is why a fund has both early and late exits.

Exits are the moment of truth. The common routes include a public sale of shares in an initial public offering, a trade sale to a company that wants to complement its operations, a sale to the firm’s management team, repayment of preference shares, or a secondary sale to another private equity fund¹. The choice depends on whether the fund wants a partial or complete exit, the remaining growth potential, the relative costs and the market conditions¹. A recapitalisation is another way in which returns arrive: cash is distributed to the fund from the company’s cash flow or from newly raised debt³. The fund mechanics page shows the capital call and distribution schedule in detail.

What the manager is paid

Two payments make up the manager’s income, and both are covered fully on the fees and carry page. Once investors have committed to a fund they pay a management fee, typically an annual percentage of 1-2%¹. The base is total commitments during the investment period and invested capital after it¹. The firm as general partner also typically earns carried interest, a percentage, circa 20%, of the fund’s profits above a certain level of pre-agreed cash return, the hurdle rate¹.

The design is meant to align the manager with the investors. IOSCO found that the majority of firms and their staff accrue performance-related remuneration only on realised profits, and only after fund investors have received a full return on their investment plus a cost-of-money hurdle¹. The rules of the game are written into the limited partnership agreement. The Institutional Limited Partners Association (ILPA) serves more than 515 member institutions representing over US$2 trillion of private equity assets⁶. Three guiding principles form the essence of an effective partnership in its view: alignment of interest, governance and transparency⁶. Its Principles were first published in September 2009 to encourage discussion between limited partners and general partners⁶. They are not a checklist: each partnership should be considered separately⁶.

Why invest in private equity: the case and the evidence

This section sets out the case investors and managers make. It is not advice, and the evidence is mixed. BlackRock presents private equity as a complement to public equity, with the potential for higher returns driven by an illiquidity premium and manager skill, alongside diversification across an expanded set of opportunities⁵. The opportunity-set argument is concrete: in the United States, private companies make up 80 percent of companies with revenue above US$100 million, and public companies only 20 percent⁵.

KKR puts private equity’s average lead over global public equities at 4-5% over the past 25 years¹⁰. That is a manager’s figure. Academic work offers a more cautious picture. An NBER study using a 1981-2001 dataset documented excess returns of five plus percent per annum relative to the aggregate public equity market⁹. One interpretation of that magnitude is compensation for holding a 10-year illiquid investment⁹. Other work reaches different answers. Academic studies of net-of-fees returns disagree on whether the average fund beats public markets³. Performance also varies a great deal across funds³.

Measuring any of this is hard. Unlike mutual funds, private equity funds need not disclose performance data³, and limited disclosure makes the returns relatively difficult to study³. The balanced summary is that evaluations of the returns of private equity are mixed: some find that it outperforms public equity, others find otherwise³. Primary studies, not a single headline spread, are the place to judge it.

Private equity versus hedge funds, venture capital and listed shares

Private equity is often confused with its neighbours. The table sets private equity against hedge funds, the one most often mixed up with it.

The SEC draws the same contrast from the investor’s side: unlike mutual funds or hedge funds, private equity firms often focus on long-term opportunities in assets that take time to sell, with an investment time horizon typically of 10 or more years².

Venture capital is not a separate world. It is a broad subcategory of private equity covering equity investments in typically less mature companies³. The difference from a buyout is control: buyouts are generally “control equity positions” in which the fund buys a majority, while other strategies typically take minority stakes, which reduces their ability to effect transformational change³. Against listed shares, the contrast is liquidity and disclosure: for the vast majority of private-equity investments there is no listed public market, although a robust secondary market exists for sellers³.

Who can invest, and why access is limited

A private equity fund is typically open only to accredited investors and qualified clients in the United States². These include institutional investors, such as insurance companies, university endowments and pension funds, and high income and net worth individuals². The initial investment amount is often very high². Even someone who owns no fund interest may hold exposure indirectly through a pension plan or an insurance policy².

Hong Kong draws its own line, using the professional investor tests in the SFC’s rules. An individual qualifies with a portfolio of not less than HK$8 million¹¹. A corporation or partnership qualifies with a portfolio of not less than HK$8 million or total assets of not less than HK$40 million¹¹. Section 175 of the Securities and Futures Ordinance prohibits the offer of securities without an offering document, and that prohibition does not apply to offers to professional investors¹¹. The Legislative Council paper lists unauthorised funds, including hedge funds and private equity funds, among its examples of private placement products¹¹. The SFC completed a review of these thresholds in May 2020 and did not recommend changes¹¹. Check the current text before relying on any figure.

Institutions carry most of the weight. Pension funds, insurers, endowments and sovereign wealth funds are the main institutional sources of capital³. Most institutional investors do not invest directly in privately held companies, lacking the expertise and resources to structure and monitor the investment, so they invest through a fund or a fund of funds³. Large owners such as pension funds, insurers and sovereign funds have a low likelihood of facing liquidity shocks in the medium term and can afford the required long holding periods³.

Access for individuals is widening only at the margin, through regulated platforms that fractionalise the assets³.

A short history

The history is short enough to read as a timeline, and the dates explain why the industry looks the way it does. Only dated items with a primary or standards-body source are listed.

• 1970s and 1980s. Private equity took shape as firms such as KKR pioneered the leveraged buyout, and the 1980s boom in such deals established the model¹⁰.
• 2008. An IFSL report cited by IOSCO estimated that US$189 billion of private equity was invested worldwide, down 40% from 2007¹.
• 2025. Preqin data put private equity assets under management at nearly US$10.5 trillion in August 2025¹⁰.

Two threads run through it. One is scale, from a niche of venture and buyout deals to nearly US$10.5 trillion of assets by August 2025¹⁰. The other is leverage: beginning in the 1970s, firms such as KKR pioneered the use of leveraged buyouts to acquire, restructure and improve companies¹⁰.

Private equity in Asia and Hong Kong

Asia was an investment destination before it was a fundraising centre. An IFSL report cited by IOSCO estimated that US$189 billion of private equity was invested worldwide in 2008¹. In that data, Asia-Pacific accounted for 9% of funds raised but 29% of global private equity investment¹. Since 2000 the importance of Asia-Pacific and emerging markets as destinations has grown, particularly China, Singapore, South Korea and India¹.

The latest regional numbers come from AVCJ and Bain data compiled in a King & Wood Mallesons paper and cover 2024. A law firm’s compilation is context, not a rule⁷.

The region’s themes are visible in the table: more buyouts, bigger deals and a congested exit door. Both LPs and GPs see the exit environment as the biggest impediment to strong returns⁷. Secondary exits, where one fund sells to another, accounted for 27% of exit value in 2024⁷. Co-investment is also growing: a StepStone survey covering 145 GPs and 420 funds found that co-investment volume had risen approximately 30% since before the pandemic⁷. Technology retains the highest share of deal value and count across the region⁷.

Hong Kong is both a market and a regulator. AVCJ Research data in the SFC’s 2024 survey rank Hong Kong second in Asia after Mainland China in 2024 by total capital under management by private equity funds, excluding real estate funds, at US$229 billion, against US$221 billion in 2023⁸. The SFC adds a caution on coverage: some private equity firms in Hong Kong are neither licensed corporations nor registered institutions⁸. The rule that decides which side of that line a manager falls on is concrete. A firm delegated discretionary power to make investment decisions on securities for a fund in Hong Kong is required to obtain a licence for Type 9 regulated activity, asset management¹². The SFC Type 9 licence page sets out the licensing rules, and the Hong Kong limited partnership fund page covers the vehicle most Hong Kong-managed funds use, and the regulation section collects the rule-based pages.

Risks, criticism and conflicts of interest

Every explainer should say where the model strains. Three risks lead the SEC’s investor guidance. First, illiquidity: because of the long horizon, an investment is often illiquid and may need to be held for several years before any return is realised, and funds typically impose limits on withdrawal². Second, fees and expenses: the SEC has brought enforcement actions involving fees and expenses that funds and investors incurred without adequate consent or disclosure². Third, conflicts: private equity firms often have interests that conflict with the funds they manage and, by extension, with their limited partners². As fiduciaries, advisers must make full disclosure of all conflicts to obtain informed consent².

A manager’s own list is similar: private equity carries risks beyond ordinary market risk, including the illiquidity of the underlying assets, limited regulatory oversight and fewer reporting requirements than listed counterparts⁵. Leverage adds its own risk, because it magnifies losses as it magnifies gains³.

Critics go further. Their argument is that an interest in short-term profits, without regard for the long-term effects, can lead to job loss, raised prices, asset stripping and a greater likelihood of bankruptcy for the companies acquired³. In 2024 the Bank of England warned that businesses owned by private equity firms were more vulnerable to default than other large businesses³. These are contested claims.

The regulators’ answer has been to rely on structure and disclosure. IOSCO’s work on conflicts found that mitigation typically takes the form of alignment of interest through incentive structures, disclosure and legal agreements¹. Funds in more developed markets are typically set up with a contractual requirement to maintain an investor advisory committee, a small sample of investors, often the largest in the fund¹. The committee’s main function is to review the firm’s approach to resolving material conflicts, a forum for conflict management and not for investment decisions¹.

This page explains what private equity is. Nothing here is an offer, a recommendation or advice, and no fund or manager is ranked.