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Why is market capitalization such an important concept? It allows investors to understand the relative size of one company versus another. Market cap measures what a company is worth on the open market, as well as the market's perception of its future prospects, because it reflects what investors are willing to pay for its stock.

Large-cap companies are typically firms with a market value of $10 billion or more. Large-cap firms often have a reputation for producing quality goods and services, a history of consistent dividend payments, and steady growth. They are often dominant players within established industries, and their brand names may be familiar to a national consumer audience. As a result, investments in large-cap stocks may be considered more conservative than investments in small-cap or mid-cap stocks, potentially posing less risk in exchange for less aggressive growth potential.