Equity

Quick Definition

Equity is the value of ownership in an asset after all associated liabilities have been subtracted. In personal finance, home equity is a home's value minus the outstanding mortgage. In corporate finance, shareholders' equity (also called book value) is total assets minus total liabilities. In investing, equity refers to ownership stakes in companies, primarily through stocks.

Equity = Assets - Liabilities

What It Means

Equity is what you truly own, free and clear. If your home is worth $400,000 and you owe $250,000 on the mortgage, your equity is $150,000. That is the economic interest you have actually built. The bank has a claim on the other $250,000.

The same logic applies to corporate equity. If a company has $5 billion in assets and $3 billion in liabilities, shareholders collectively own the remaining $2 billion in equity. That is the shareholders' claim on the company's assets after all creditors are paid.

In investing, when people say "equities" they mean stocks, ownership interests in companies. Buying a share of Apple gives you a fractional equity interest in the company.

As of Q1 2026, American homeowners hold a record $34.9 trillion in home equity, according to Federal Reserve Flow of Funds data. That works out to roughly $310,500 per mortgaged homeowner. Despite rising mortgage rates and cooling price growth, equity levels remain near historic highs. Globally, public equity markets totaled approximately $99 trillion at the end of 2025, while the private equity market reached an estimated $19.96 trillion in 2026.

The Three Contexts of Equity

1. Personal Finance: Home Equity

Home Equity = Home Market Value - Outstanding Mortgage Balance

Home equity builds through two mechanisms: paying down the mortgage principal and property value appreciation. According to ATTOM's Q1 2026 report, 43.3% of mortgaged residential properties in the U.S. were "equity-rich," meaning loan balances were no more than half of estimated market value. Only 3.2% were seriously underwater. However, the equity-rich share has declined from its peak of 44.6% as mortgage rates have risen and home price growth has cooled.

2. Corporate Finance: Shareholders' Equity

Shareholders' equity appears on the balance sheet as the residual after subtracting total liabilities from total assets:

Shareholders' Equity = Total Assets - Total Liabilities

Components of shareholders' equity:

Example balance sheet equity section:

3. Investing: Equity as Stocks

When investors refer to "equities" or "equity investing," they mean owning shares of stock, partial ownership of a business. Key characteristics:

Private Equity vs. Public Equity

Private equity has grown dramatically over the past two decades, expanding nearly elevenfold from $521 billion in 2006 to $5.7 trillion in 2025, according to MSCI. The broader private equity market, including buyout, venture, growth, and secondaries funds, reached an estimated $19.96 trillion in 2026 and is projected to hit $37.85 trillion by 2031 at a 13.65% CAGR.

Equity Dilution

When a company issues new shares, existing shareholders' percentage ownership decreases (dilution):

Example:

• You own 1,000 shares of 10,000 total = 10% ownership
• Company issues 2,000 new shares, total becomes 12,000
• You still own 1,000 shares but now = 8.33% ownership, diluted by approximately 17%

Dilution reduces the percentage claim each existing shareholder has on the company's earnings and assets. This is why stock option grants, secondary offerings, and convertible debt issuances are watched closely by investors.

Related Concepts

• Asset: What a company or individual owns, the starting point for calculating equity
• Liability: What is owed, subtracted from assets to determine equity
• Net Worth: Total assets minus total liabilities across your entire financial picture
• Balance Sheet: The financial statement where shareholders' equity appears
• Stock: The most common form of equity investment for individual investors
• Book Value: Another term for shareholders' equity, representing the accounting value of ownership
• Mortgage: The liability subtracted from home value to calculate home equity

Common Mistakes to Avoid

• Confusing equity with market value: Your home equity is not your home's value. It is the value minus what you owe. A $500,000 home with a $400,000 mortgage gives you $100,000 in equity, not $500,000.
• Treating home equity as liquid cash: Home equity is illiquid. Accessing it requires selling the home, taking a home equity loan, or opening a HELOC. Each option has costs, risks, and qualification requirements.
• Assuming negative book equity means bankruptcy: Companies with more accumulated losses than contributed capital, or companies that have repurchased massive amounts of their own stock (like McDonald's and Apple), can show negative book equity. This is not automatically a sign of distress for profitable companies. It means cumulative buybacks and dividends have exceeded retained earnings plus paid-in capital.
• Ignoring dilution when evaluating employee stock grants: If your company keeps issuing new shares for employee compensation, your percentage ownership shrinks even if the share price stays flat. Always check total share count trends, not just per-share metrics.

Frequently Asked Questions

Q: Is home equity the same as net worth? A: No. Net worth includes all assets minus all liabilities across your entire financial picture: investments, retirement accounts, vehicles, and any other assets, minus all debts. Home equity is just one component of net worth, though it is often the largest single component for American homeowners.

Q: Can shareholders' equity be negative? A: Yes. Companies with more accumulated losses than contributed capital, or companies that have repurchased massive amounts of their own stock, can show negative book equity. This is not automatically a sign of distress for profitable companies. It means cumulative buybacks and dividends have exceeded retained earnings plus paid-in capital.

Q: What is "sweat equity"? A: Sweat equity is the non-monetary value contributed to a business or property through labor and effort rather than cash investment. A founder who builds a startup without taking a salary is building sweat equity. A homeowner who renovates their house themselves is contributing sweat equity. It is a real form of value creation even though no cash changes hands.

Q: How much home equity does the average American homeowner have? A: As of Q1 2026, the average mortgaged homeowner has approximately $310,500 in equity, according to Cotality. Aggregate U.S. homeowner equity reached $34.9 trillion. However, this average masks wide geographic variation, from $688,000 in Hawaii to $114,700 in Louisiana.