When you buy Common Stock, you are buying a piece of the company. This means that as the company grows and prospers, your stock will too. Common stock is one of the most popular types of investments because it offers high potential returns and gives investors a voice in how the company is run. Additionally, if the company does well, its common stock may be worth more than when it was purchased.Common stocks can be bought through a broker or directly from a corporation; however, there are risks associated with investing in them. For example, if the company experiences financial difficulty or goes bankrupt, shareholders may lose some or all of their investment. Because of this risk factor, it's important to do your homework before investing in any common stocks.