Types of stocks

There are two main types of stocks: common stock and preferred stock.


Common Stock 
 
Common stock is, well, common. When people talk about stocks they are usually referring to this type. In fact, the majority of stock is issued is in this form. We basically went over features of common stock in the last section. Common shares represent ownership in a company and a claim (dividends) on a portion of profits. Investors get one vote per share to elect the board members, who oversee the major decisions made by management.

Over the long term, common stock, by means of capital growth, yields higher returns than almost every other investment. This higher return comes at a cost since common stocks entail the most risk. If a company goes bankrupt and liquidates, the common shareholders will not receive money until the creditors, bondholders and preferred shareholders are paid.

Preferred Stock
 
Preferred stock represents some degree of ownership in a company but usually doesn't come with the same voting rights. (This may vary depending on the company.) With preferred shares, investors are usually guaranteed a fixed dividend forever. This is different than common stock, which has variable dividends that are never guaranteed. Another advantage is that in the event of liquidation, preferred shareholders are paid off before the common shareholder (but still after debt holders). Preferred stock may also be callable, meaning that the company has the option to purchase the shares from shareholders at anytime for any reason (usually for a premium).

Some people consider preferred stock to be more like debt than equity. A good way to think of these kinds of shares is to see them as being in between bonds and common shares.

Different Classes of Stock
 
Common and preferred are the two main forms of stock; however, it's also possible for companies to customize different classes of stock in any way they want. The most common reason for this is the company wanting the voting power to remain with a certain group; therefore, different classes of shares are given different voting rights. For example, one class of shares would be held by a select group who are given ten votes per share while a second class would be issued to the majority of investors who are given one vote per share.

When there is more than one class of stock, the classes are traditionally designated as Class A and Class B. Berkshire Hathaway (ticker: BRK), has two classes of stock. The different forms are represented by placing the letter behind the ticker symbol in a form like this: "BRKa, BRKb" or "BRK.A, BRK.B".

Most stocks are traded on exchanges, which are places where buyers and sellers meet and decide on a price. Some exchanges are physical locations where transactions are carried out on a trading floor. You've probably seen pictures of a trading floor, in which traders are wildly throwing their arms up, waving, yelling, and signaling to each other. The other type of exchange is virtual, composed of a network of computers where trades are made electronically.

The purpose of a stock market is to facilitate the exchange of securities between buyers and sellers, reducing the risks of investing. Just imagine how difficult it would be to sell shares if you had to call around the neighborhood trying to find a buyer. Really, a stock market is nothing more than a super-sophisticated farmers' market linking buyers and sellers.

Before we go on, we should distinguish between the primary market and the secondary market. The primary market is where securities are created (by means of an IPO) while, in the secondary market, investors trade previously-issued securities without the involvement of the issuing-companies. The secondary market is what people are referring to when they talk about the stock market. It is important to understand that the trading of a company's stock does not directly involve that company.

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