The fund invests primarily in common stocks. It invests at least 80% of its assets in securities of companies with small market capitalizations. The fund invests in companies that Fidelity Management & Research Company LLC (FMR) believes have above-average growth potential (stocks of these companies are often called "growth" stocks). It invests in domestic and foreign issuers. The fund uses fundamental analysis of factors such as each issuer's financial condition and industry position, as well as market and economic conditions, to select investments.