Ok, a stock is a small share or piece of a company that you own. The value of the stock is determined by it's value on the stack market it is traded on. The most well known stock exchange is the NYSE. Companies must meet certain criteria to be eligeble to be traded on NYSE. NASDAQ is not really an exchange but it is a system for trading stocks not listed on the NYSE. NASDAQ still has requirements for a company to be listed and their stocks traded. All other stocks are Over The Counter (OTC) generally called "penny stocks" If the company does well stock goes up, if it does poor, stock goes down. The value of a stock fluctuates with the buy or sell prices that brokers offer and accept throughout the day. The brokers buy and sell on information they get from stock analysts, company announcememnts, company predictions, past performance, and many times just plain old rumors. Broker John may here that GE is in the running to win a big contract to provide jet engines for a new aircraft. He begins to buy GE stock thinking that the company will will the contract. Other brokers see broker John buying and bu as well. This will drive the price up. When GE doesnt win the price may go down.
There are several types of stocks that can be issued by a company. The 2 primary types are "Common" and "prefered". Common are just that, the most common. You buy a share of common stock you own a tiny piece of that company. With that ownership you also gain a tiny percentage of the companies profits called a dividend. Once a year a company will announce if it is going to pay a dividend. (many do not anymore) If you own the stock on a predetermined date (called the Ex dividend date) you get the dividend. Most dividents are small, like 1 cent but can goup to $1. If you own 5,000,000 shares and the dividen is .01 you just got $50,000. Most stocks are held by brokers. Even is you buy it you just get a statement from a broker saying "You have XXX shares of GE" Some old timers have "stock certificates" or a paper with a CUISP (a serial number) that is like a "title" for whatever ammount of shares. In some cases the company has been bought out, gone under, merged or for whatever reason does not exist anymore. In some of those cases the stock certificates are more valuable as collectors items than they are IRL.
Prefered stock is a different kind of stock that doesn not usually entitle the owner to a dividend. They are less volitile in that should the company fold, the preffered stock holders get paid first.
Stocks can be risky, depends on what you buy. There are certain companies that are very stable and have shown slow steady growth for decades. these stocks are considered very safe and are where people invest when times are shakey. They are calle "blue chip" stocks. They include, GE, GM, Ford, AT & T old reliable companies. On the other end of the scale are risky companies. A small company that is into off shore oil drilling might sound good but has much much more risk than IBM.
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