Updated for the 2026-2027 CFA® Level I curriculum.
Public and private equity securities represent ownership in a company, but they differ in how they trade, who can buy them, and how much information investors receive. This distinction matters because CFA Level I questions often describe a company or transaction and ask you to identify which category applies. After reviewing this note, you should be able to identify the defining features of each type and classify a security correctly from a scenario.
Quick Answer
Public equity securities trade on an exchange or organized market, are available to any investor, and come with regulatory disclosure requirements. Private equity securities are sold through direct negotiation to a limited group of investors, are not listed on an exchange, and carry lighter disclosure obligations.
The main differences show up in market access, liquidity, and the information available to investors. Level I questions test whether you can classify a security based on facts, not just recall the definitions.
Key Takeaways About Public vs Private Equity Securities
Public equity securities trade on organized exchanges or through public markets, and any investor can buy or sell them.
Private equity securities are sold directly to a limited number of investors, often institutions or accredited individuals.
Public companies face mandatory disclosure and reporting requirements, which creates a richer information environment.
Private companies disclose less information because they are not subject to the same regulatory requirements.
Public equity is generally more liquid because shares trade continuously in an active market.
Private equity is less liquid because there is no organized secondary market and transactions require finding a buyer directly.
A company can be private and later become public through an initial public offering, or public and become private again through a buyout.
What You Need to Know for CFA Level I
Identify the characteristics that define a public equity security.
Identify the characteristics that define a private equity security.
Compare public and private equity securities on market access, liquidity, and information environment.
Classify a security or issuer as public or private based on a described scenario.
Recognize that private equity investors often accept lower liquidity in exchange for other terms, such as governance rights or a lower purchase price.
Characteristics of Public Equity Securities
Public equity securities trade on a stock exchange or through another organized public market. Any investor with a brokerage account can buy or sell shares, which is why these securities are also called publicly traded or listed securities.
Three features define public equity:
Open market access
Shares are available to retail and institutional investors alike. No special relationship with the company is required to buy in.
Regulatory oversight
Public companies must meet listing requirements set by the exchange and disclosure rules set by securities regulators. This includes periodic financial statements, material event disclosures, and governance standards.
Active secondary market
Because many buyers and sellers participate, shares typically trade frequently. Prices update continuously during market hours based on new information and order flow.
These features work together. Open access creates a large pool of potential traders, which supports liquidity. Regulatory disclosure gives that pool of traders enough information to price the shares reasonably.
Characteristics of Private Equity Securities
Private equity securities are not listed on an exchange. Ownership interests are sold directly to a limited number of investors through private placements or negotiated transactions.
Three features define private equity:
Restricted access
Only investors who meet specific criteria, such as institutional investors or accredited individuals, can typically participate. The company controls who becomes an owner.
Limited disclosure
Private companies are not required to file public financial statements or meet exchange listing standards. Investors negotiate for the information they need directly with the company.
Illiquid secondary market
There is no centralized venue where private shares trade. An investor who wants to exit typically must find a buyer directly, which can take time and may require a price discount.
Private equity includes venture capital, which funds early-stage companies, and private equity buyout funds, which acquire established companies and often take them private. Both types share the same structural features: limited investor access, negotiated terms, and reduced disclosure.
Key Differences in Market Access, Liquidity, and Information Environment
Feature | Public Equity | Private Equity |
|---|---|---|
Market access | Open to any investor | Limited to qualifying investors |
Trading venue | Exchange or organized public market | Direct negotiation, no centralized market |
Liquidity | Generally high, continuous trading | Generally low, exit requires finding a buyer |
Disclosure | Mandatory periodic reporting | Negotiated, not standardized |
Pricing | Set continuously by market trades | Negotiated between buyer and seller |
Typical investors | Retail and institutional | Institutional, accredited, or insiders |
The table shows the pattern behind every distinction. Open access supports frequent trading, which supports liquidity. Frequent trading requires reliable information, which is why regulators require disclosure for public companies. Private equity reverses each link. Restricted access means fewer trades, which means less pressure for standardized disclosure, which means investors negotiate for information directly instead of relying on public filings.
How to Classify a Security or Issuer From a Scenario
Level I questions often describe a company or transaction without using the words "public" or "private" directly. To classify correctly, check for these signals.
Signals of a public security:
The scenario mentions an exchange, ticker symbol, or listed price.
The company files periodic reports with a securities regulator.
Any investor type is mentioned as able to buy shares.
Signals of a private security:
The scenario mentions a private placement, negotiated sale, or venture capital round.
Only institutional or accredited investors are named as buyers.
There is no mention of an exchange or public quote.
If a scenario mentions a company moving from one status to another, such as an initial public offering or a going-private transaction, focus on which market access, liquidity, and disclosure features apply after the change.
Worked Example
Beacon Robotics is a five-year-old technology company that builds industrial automation equipment. The company has never listed its shares on an exchange. Last month, Beacon raised new capital by selling ownership shares directly to three venture capital firms. Beacon does not publish quarterly financial statements to the public, but it does share detailed financial reports with the three firms as part of the investment agreement.
Step 1: Identify the market access
Only three venture capital firms were able to buy shares. The general investing public had no access to this transaction.
Step 2: Identify the trading venue
There is no mention of an exchange or public quote. The sale happened through direct negotiation.
Step 3: Identify the disclosure pattern
Beacon does not publish public financial statements. It shares information directly with its investors instead, which is a negotiated arrangement rather than a regulatory requirement.
Beacon Robotics is a private equity issuer. All three signals point the same direction: restricted investor access, no public trading venue, and negotiated rather than mandatory disclosure. If Beacon later files for an initial public offering and lists its shares, the classification would change to public at that point.
Common Exam Traps
Confusing private equity with a private placement of debt
The LOS is about equity ownership. A private debt placement follows some similar patterns, but it does not make a company's equity public or private on its own. Check whether the security in question is an ownership interest.
Memorizing the labels without applying them to the facts
A question may describe a transaction in detail without using the words "public" or "private equity." Look for the underlying signals: who can buy, where it trades, and what disclosure exists.
Assuming all private companies are small
Company size is not part of the definition. Large, well-established companies can be private if their equity is not listed and access is restricted to specific investors.
Concluding a classification without connecting it to a reason
A correct answer on this LOS should tie back to market access, liquidity, or disclosure. Stating "public" or "private" without identifying the supporting fact is an incomplete answer on an exam that rewards applied reasoning.
Practice Question
Grantham Materials has traded on a national stock exchange for 15 years. Last quarter, a private equity firm purchased all outstanding shares in a negotiated transaction and delisted the company from the exchange. Grantham no longer files public financial statements. Which of the following best describes Grantham's current equity classification?
Public, because the company still has the same underlying business operations
Private, because the company is no longer listed and no longer files public financial statements
Public, because it was publicly traded for 15 years before the transaction
Correct Answer: B
Classification depends on current market access, trading venue, and disclosure, not on operating history. After the buyout, Grantham's shares are no longer available on an exchange, and the company no longer meets public disclosure requirements. Both signals point to a private classification.
Option A: Incorrect. Business operations do not determine equity classification. Market access and disclosure do.
Option C: Incorrect. Prior public trading history does not carry forward once a company is delisted and taken private.
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FAQs About Public vs Private Equity Securities
Can a company have both public and private equity outstanding?
Yes. A company can issue public shares while certain classes or portions of equity remain privately held, though CFA Level I focuses on the general distinction between fully public and fully private issuers.
Is private equity always riskier than public equity?
Risk depends on the specific company and terms, not on public or private status alone. The LOS focus is on market access, liquidity, and disclosure differences, not a risk ranking.
Does an initial public offering change a company's equity classification immediately?
Yes. Once shares list on an exchange and the company meets public disclosure requirements, it is classified as a public equity issuer.