The document discusses capital structure, which refers to the proportion of debt, preferred stock, and common equity used to finance a company's assets. Capital structure includes long-term debt and stockholder equity. Capitalization refers to the total amount of securities issued, while capital structure refers to the types and proportions of securities. Financial structure includes all financial resources, both short- and long-term. An optimal capital structure maximizes share price and minimizes cost of capital. Factors that determine a company's capital structure include financial leverage, growth and stability of sales, cost of capital, cash flow ability, nature and size of the firm, control, flexibility, requirements of investors, and capital market conditions.