A Brief History Of The Stock Market A stock is a legal symbol of ownership in a business. When you buy stock, you are actually buying part-ownership of the business. In other words, you become a shareholder. A business will typically spread ownership to hundreds or even thousands of shareholders. Shares are sold when the company wishes to get cash. In a small business, it may be said that the owner has 100% of all shares. However, when a business grows beyond a certain size, it may require capital for expansion and selling shares is the easiest way to do that.
Stock Market Investing – Finding Stock Market Industry Beta. Stock Market Industry Beta is the measure of how a stock’s trading price moves compared to the market as a whole. Knowing this figure one can understand how volatile a stock is. A beta of 1 means a stock’s price fluctuates exactly as much as the market. A beta less than 1 means a stock is less volatile than the market and a beta greater than 1 means that stock is more volatile than the market.