What is the meaning of Penny stock?

Stocks that trade for less than $1 a share are often described as' Penny stock's. Penny stocks change hands over the counter (OTC) and tend to be extremely volatile. Their prices may spike up one day and drop dramatically the next, reflecting the unsettled nature of the companies that issue them. While some penny stocks may produce big returns over the long term, many turn out to be worthless. Institutional investors tend to avoid penny stocks, and brokerage firms typically warn individual investors of the risks involved before handling transactions in these stocks. However, penny stocks are sometimes marketed aggressively over the Internet to unsuspecting investors.