Mid-Cap companies are those with a market cap—or market value—between $2 billion and $10 billion. For these companies, some of the appealing features are that they are expected to grow and increase profits, market share, and productivity; they are in the middle of their growth curve.There are several reasons why mid-cap companies may be appealing to investors. First, mid-sized firms tend to be more nimble than large corporations. They can make decisions quickly and implement changes rapidly. This can give them an advantage in terms of innovation and responding to customer needs or shifts in the marketplace. Second, mid-caps have typically not yet reached their full potential for growth. They may still have room to expand their marketshare or enter new markets entirely. This offers investors the potential for significant capital appreciation as the company grows over time. Finally, many mid-sized firms operate in niche markets where they can be leaders rather than followers; this gives them a sustainable competitive advantage which can lead to higher profitability over time."