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    Equity Value (Market Cap)

    Market Cap is simply what the stock market says your equity is worth — share price times the number of shares. It's the starting point for virtually every valuation analysis.

    Definition

    Equity Value, commonly called Market Capitalization (Market Cap), represents the total value of a company's equity to its shareholders. It is calculated by multiplying the current share price by the total number of diluted shares outstanding. Equity value reflects what equity holders collectively own after all debt and other claims are satisfied.

    Formula

    Equity Value = Share Price × Diluted Shares Outstanding

    Share Price

    Current market price per share of common stock

    Diluted Shares Outstanding

    Basic shares + impact of in-the-money options, RSUs, warrants via treasury stock method

    EV

    Equity Value Calculation

    Share Price x Diluted Shares = Market Cap

    Share Price$50
    x
    Diluted Shares200M
    =
    Market Cap$10B
    P/B

    Price-to-Book Ratio

    Market Cap vs. Book Value — the premium investors pay

    $10BMarket Cap
    Market Value
    $4BBook Value
    Book Value
    2.5x P/B(150% premium to book)
    P/B < 1.0x
    Market thinks assets are impaired or ROE < cost of equity
    P/B = 1.0x
    Market values equity at exactly its accounting book value
    P/B > 1.0x
    Market pays a premium for earnings power, brand, or growth

    Equity Value vs. Enterprise Value

    Equity value measures the value available to equity holders only, while enterprise value measures the total value of the business to all capital providers (equity, debt, preferred). You move from equity value to enterprise value by adding net debt, minority interest, and preferred stock, then subtracting cash. Equity value is used with equity-level metrics (EPS, Net Income) while enterprise value pairs with pre-debt metrics (EBITDA, Revenue, EBIT).

    Basic vs. Diluted Shares

    Always use diluted shares outstanding when calculating equity value. Diluted shares include basic shares plus the impact of in-the-money stock options, RSUs, warrants, and convertible securities calculated via the treasury stock method. Using basic shares understates the true equity value because it ignores potential dilution from these instruments.

    When to Use Equity Value

    Use equity value multiples (P/E, Price/Book) when comparing companies with similar capital structures or when analyzing financial institutions like banks and insurance companies. For most other analyses, enterprise value multiples are preferred because they neutralize differences in capital structure. Equity value is also the starting point for the equity value to enterprise value bridge, one of the most common interview walks.

    Worked Example — With Real Numbers

    A company trades at $50 per share and has 180M basic shares outstanding, plus 20M diluted shares from in-the-money options (treasury stock method). Diluted shares = 200M. Equity Value = $50 × 200M = $10B. To get enterprise value, you would add $3B of debt and subtract $1B of cash: EV = $10B + $3B - $1B = $12B.

    Key Takeaways

    1

    Equity value = share price × diluted shares outstanding — always use diluted, not basic

    2

    It represents value to equity holders only, not the total firm value

    3

    Equity value is the starting point for the equity-to-enterprise-value bridge

    4

    Use equity value multiples for banks/financials or when capital structures are comparable

    Common Mistakes in Interviews

    Using basic shares instead of diluted shares — this understates equity value

    Confusing equity value with enterprise value — equity value excludes debt and cash adjustments

    Pairing equity value with pre-debt metrics like EBITDA — use Net Income or EPS instead

    How Interviewers Test This

    You will almost certainly be asked to bridge equity value to enterprise value. Memorize: Equity Value + Debt + Preferred + Minority Interest - Cash = Enterprise Value. Also be ready to explain why you use diluted shares.

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