When considering penny stocks to buy it is important to keep a few fundamental things in mind. First and foremost, the stocks are trading for pennies for a reason. This is the first thing any new or experienced trader should understand before investing in penny stocks. They do not trade on the major exchanges and they are subject to extreme price movements. The volume is generally low on penny stocks as compared to major stocks. This means if an investor buys one big block of shares; it has a tremendous impact on the price of the stock. Volatility is an often used word in the trading world. Some people and traders take it for granted and throw caution to the wind. In an effort to make fast cash, new investors start throwing money at penny stocks and usually end up getting burned. It is important to have a sound trading strategy in place.