Comparing privately owned and public companies requires more than asking which business is larger or more profitable. The ownership structure changes what information is available, how shares are valued, who controls decisions, and how easily an investor can participate.
Start With the Ownership Structure
A public company has shares that trade on a stock exchange or another public market. Anyone who meets the broker’s requirements can generally buy or sell those shares during market hours. Public companies must also provide regular disclosures to regulators and investors.
A privately owned company does not have shares traded on a public exchange. It may be owned by founders, family members, employees, private-equity firms, venture-capital investors, or a small group of partners. Some private companies are very small, but others are large, mature businesses with substantial revenue and thousands of employees.
Before comparing the businesses, identify who owns the equity and how ownership can change. Ask:
- Is the company controlled by a founder, family, management team, or financial sponsor?
- Are there multiple classes of shares with different voting rights?
- Does a parent company own the business?
- Can outside investors buy shares directly, or is participation limited to a private offering?
- Are employees receiving stock options or other equity incentives?
Ownership affects incentives. A founder-controlled private company may be able to make long-term decisions without quarterly market pressure. A widely held public company may have broader accountability but more pressure to meet short-term expectations.
Compare the Available Financial Information
The first major practical difference is information. Public companies typically publish annual reports, quarterly reports, earnings releases, investor presentations, and filings that describe financial results, risks, debt, executive compensation, and major events.
Private companies may provide audited statements to lenders, investors, or regulators, but those documents are not always available to the public. You may need to rely on company announcements, industry databases, credit reports, interviews, customer information, or estimates.
Use the same core financial categories for both companies:
- Revenue growth: Is sales growth accelerating, stable, or declining?
- Gross margin: How much remains after the direct cost of producing goods or services?
- Operating margin: Does the company generate profit from normal operations?
- Free cash flow: Can the business fund itself after capital expenditures?
- Debt: How much borrowing exists, and when does it mature?
- Working capital: Is the company able to meet near-term obligations?
- Customer concentration: Does one customer account for a large share of sales?
- Recurring revenue: Are sales contractual or dependent on repeated one-time purchases?
Do not compare a public company’s reported figures with a private company’s marketing claims as though they have equal reliability. Label every number by its source and date. A useful worksheet can include the metric, reported value, period, source, accounting basis, and confidence level.
Private companies may use adjusted earnings measures that exclude owner compensation, unusual expenses, or acquisition costs. Public companies also use adjusted metrics, but they generally must reconcile them with standardized financial statements. When possible, compare figures based on the same accounting definition.
Evaluate Business Performance, Not Just Size
Revenue alone does not show which company is stronger. A large company may have weak margins, heavy debt, or declining demand. A smaller company may have better economics but less diversification.
Compare performance across at least three to five years if the information exists. Look for patterns rather than a single impressive year. Important questions include:
- Has revenue grown consistently, or only after acquisitions?
- Are profits improving because of genuine efficiency or temporary cost cuts?
- Does cash flow follow reported earnings?
- Are margins higher because the company serves a defensible niche?
- Is growth dependent on one product, geography, supplier, or customer?
- How did the company perform during a recession, supply disruption, or industry downturn?
For public companies, read the management discussion section in regulatory filings. It often explains changes in sales, pricing, costs, inventory, and capital spending. For private companies, request management accounts, customer-retention data, order backlogs, and budgets when you have a legitimate reason and permission to review them.
A helpful alternative is to compare operating indicators when full financial statements are unavailable. Depending on the industry, these could include store count, occupancy, subscribers, units sold, utilization, renewal rates, employee productivity, or backlog. Operating data is not a substitute for audited accounts, but it can help reveal whether the business is expanding or contracting.
Compare Valuation Carefully
Public-company valuation is visible but constantly changing. You can calculate market capitalization by multiplying the share price by diluted shares outstanding. Enterprise value adds debt and preferred equity, then subtracts cash and investments. Common valuation ratios include:
- Price-to-earnings ratio for profitable companies
- Enterprise value-to-EBITDA for comparing operating businesses with different debt levels
- Price-to-sales for early-stage or low-margin companies
- Free-cash-flow yield for cash-generating businesses
Private-company valuation is less transparent. A recent funding round, acquisition offer, or transaction involving a similar business may provide a reference point, but it does not guarantee that the company could be sold at the same price today.
Private valuations can be affected by restrictions on selling shares, limited voting rights, preferred liquidation preferences, and the absence of a public market. A private share price may therefore not be directly comparable with the quoted price of a public company.
Use comparable companies thoughtfully. Select businesses with similar:
- Revenue model and customer type
- Growth rate and profitability
- Geographic exposure
- Capital intensity
- Debt burden
- Competitive position
Do not use a high-growth software company as a direct valuation benchmark for a low-growth industrial manufacturer simply because both have similar revenue. Valuation multiples should support a business comparison, not replace one.
Examine Control and Corporate Governance
Governance determines who makes important decisions and how other owners are protected. Public companies usually have boards of directors, shareholder votes, disclosure requirements, and committees dealing with audit, compensation, and governance. These safeguards vary in quality, so their existence alone does not guarantee good oversight.
Private companies may have a formal board, an advisory board, or no independent directors. A family-owned business may prioritize continuity across generations. A private-equity-owned company may have a board focused on operational improvement and a planned exit. Each structure creates different incentives.
Review these issues:
- Who appoints directors?
- Are directors independent from the controlling owners?
- Can minority owners block major transactions?
- Are related-party transactions disclosed?
- How are executives paid?
- What happens if the founder leaves?
- Are there succession, buy-sell, or shareholder agreements?
- Can owners be diluted by new share issuance?
For public companies, inspect the proxy statement for voting rights, executive pay, ownership concentration, and related-party matters. For private companies, review the operating agreement, shareholder agreement, capitalization table, and investor rights if you are authorized to do so.
Compare Liquidity, Access, and Exit Options
Liquidity is the ability to convert an ownership interest into cash. Public shares generally offer daily liquidity, although trading may be difficult for very small companies or during market stress. Private-company shares can be difficult or impossible to sell without approval from the company or other owners.
An investor comparing opportunities should ask:
- Is there an active market for the shares?
- Are transfer restrictions present?
- Is a public offering, acquisition, or buyback likely?
- How long might capital remain invested?
- Could the investment require additional contributions?
- What fees apply when buying or selling?
Private investment may offer access to a growing company before a public listing, but it can require a long holding period and may provide limited information. Public investment is easier to enter and exit, but the share price can change sharply because of market sentiment even when the underlying business changes little.
If you are comparing companies as a potential employee, include compensation liquidity in the analysis. Public-company restricted stock may have a clearer market value, while private-company options may be worth little unless a future financing, acquisition, or listing occurs. Review vesting, exercise prices, expiration dates, tax treatment, and what happens after leaving the company.
Assess Risk and Resilience
Private and public companies face many of the same business risks, but their exposure and visibility differ. Public filings often provide a detailed risk-factor section, while private-company risk information may need to be gathered directly.
Build a risk checklist covering:
- Competitive pressure and barriers to entry
- Regulation and licensing
- Cybersecurity and data protection
- Dependence on key employees
- Supplier and logistics disruption
- Interest-rate and refinancing risk
- Legal disputes and intellectual-property claims
- Foreign-exchange exposure
- Environmental or reputational issues
- Dependence on a single customer or distribution channel
Also evaluate resilience. How many months of expenses could the company cover with existing cash? Does it have committed credit lines? Could it reduce costs without damaging its ability to operate? Is management willing and able to raise capital if conditions worsen?
A private company may have more flexibility to avoid public disclosure during a difficult period, but less access to public equity markets. A public company can sometimes raise capital quickly, yet issuing shares may dilute existing investors and a falling stock price can make financing expensive.
Use a Consistent Comparison Table
A compact table can prevent one-sided comparisons. Fill in each row using the same date and definition wherever possible.
| Category | Privately owned company | Public company | What to verify |
|---|---|---|---|
| Ownership | Founders, family, sponsors, or private investors | Public shareholders and institutions | Voting rights and control |
| Financial access | Often limited or confidential | Regular public filings | Source quality and accounting basis |
| Valuation | Negotiated or estimated | Market price plus financial analysis | Comparable companies and liquidity |
| Liquidity | Usually limited | Generally available through exchanges | Transfer restrictions and trading volume |
| Governance | Contract-based and often concentrated | Board and shareholder-based | Independence and minority protections |
| Capital raising | Private funding, loans, or retained cash | Debt and public equity markets | Cost, dilution, and timing |
| Reporting pressure | Usually lower public scrutiny | Higher disclosure and market pressure | Long-term versus short-term incentives |
The table is a starting point, not a scorecard. A private company should not automatically be considered riskier, and a public company should not automatically be considered safer.
Follow a Practical Research Process
Use this sequence when comparing two specific companies:
- Define the purpose. Decide whether you are evaluating an investment, job offer, supplier, acquisition target, or industry competitor.
- Set the comparison period. Use the same fiscal years, currency, and inflation assumptions.
- Gather primary information. For a public company, start with regulatory filings and investor materials. For a private company, request authorized financial and operating documents.
- Normalize the numbers. Separate recurring from one-time items and distinguish revenue from bookings, billings, or estimates.
- Calculate comparable metrics. Include growth, margins, debt, cash flow, valuation, and customer concentration.
- Investigate ownership and governance. Identify who can make decisions and who bears the consequences.
- Test downside scenarios. Consider lower sales, higher costs, lost customers, refinancing problems, or delayed funding.
- Record uncertainty. Mark unavailable information instead of filling gaps with assumptions.
- Make a decision based on your purpose. The best company for a stable supplier relationship may not be the best investment.
When information is incomplete, use ranges rather than false precision. For example, estimate a valuation using several reasonable multiples and show how the conclusion changes under optimistic, base, and conservative assumptions.
Troubleshooting Common Comparison Problems
If the private company will not share detailed financial statements, ask for narrower evidence that addresses the decision: tax returns, lender summaries, audited extracts, recurring-revenue reports, customer-retention figures, or bank-confirmed debt information. If nothing can be verified, reduce the confidence of your analysis or stop the comparison.
If the companies use different fiscal years, restate the periods where possible and clearly label the mismatch. If one company reports adjusted EBITDA and the other reports operating income, create a bridge between the measures rather than comparing them directly.
If a private-company valuation seems unusually high, check whether it reflects preferred shares with special rights. Review liquidation preferences, participation rights, anti-dilution terms, and conversion provisions. A headline funding valuation may not represent the value of ordinary shares.
If a public stock appears cheap, investigate whether the discount reflects debt, declining demand, litigation, dilution, poor governance, or a structurally declining market. A low multiple is a prompt for research, not proof of value.
Know the Limitations
No comparison can eliminate uncertainty. Private companies may have less standardized information, while public companies may have more disclosure but greater exposure to market sentiment and short-term expectations. Financial statements also describe the past; they do not guarantee future performance.
Avoid using confidential information improperly, and do not treat rumors, promotional material, or unverified online estimates as equivalent to audited evidence. Securities laws and private-offering rules may apply when buying, selling, or recommending company shares, so seek qualified legal or financial advice for a transaction.
The most reliable comparison combines normalized financial data, ownership and governance analysis, liquidity considerations, operating evidence, and a clear record of what remains unknown. That process lets you judge each company on its actual economics and decision context rather than on whether its shares happen to trade publicly.