Fundamental Analysis Basics: Earnings, P/E Ratio, and Company Health

Fundamental analysis is the practice of evaluating a company's actual financial health and business prospects to judge whether its stock is fairly priced, undervalued, or overvalued — as opposed to technical analysis, which studies price charts without looking at the underlying business. It relies mainly on a company's financial statements: the income statement (revenue and profit), the balance sheet (assets, liabilities, and debt), and the cash flow statement (actual cash moving in and out).

Earnings — a company's profit — are one of the most closely watched figures, usually reported quarterly. Earnings per share (EPS) divides total profit by the number of shares outstanding, giving a per-share figure that can be compared across companies of different sizes. Markets react strongly to earnings reports, especially when actual results differ from analysts' expectations, since that gap often changes how investors value the company going forward.

The price-to-earnings ratio (P/E ratio) — share price divided by earnings per share — is a commonly used shorthand for whether a stock is expensive or cheap relative to its profits. A high P/E can mean investors expect strong future growth, or it can mean the stock is overpriced; a low P/E can mean the stock is undervalued, or it can mean the market expects the company's earnings to decline. The ratio only becomes meaningful when compared against similar companies in the same industry, since "normal" P/E levels vary widely by sector.

Other health indicators worth knowing include debt-to-equity (how much a company relies on borrowed money versus its own capital), revenue growth (whether sales are expanding or shrinking year over year), and free cash flow (cash left over after running and investing in the business, which funds dividends, buybacks, and debt repayment). No single metric tells the whole story — fundamental analysis is about building a picture from several of them together.