Stocks Investing Guide

Standard & Poor's 500, 400 and 600

The S&P 500 composite is the third most widely-cited and well-known index based on the 500 major corporations in the country and including companies listed on all three major stock exchanges as well as a few select foreign corporations who also have historical influence the American markets. The S&P 500 index is market-cap weighted, so that companies with the greater total stock value also carry the greater weight in the index.
The S&P 400 works very much like the 500, but contains the 400 next-largest corporations, mid-caps, many of which are in the process of becoming large-caps and one day in the not too distant future making it to the 500 themselves. With the 500 and the 400, Standard & Poor's manages to cover the top 900 performing corporations in the country.

The S&P 600 has only been around since 1994 and represents "small-cap" companies, or the next 600 top-performing corporations in the nation. As companies grow or die, they move either from the 600 to the 400 and 500, or are de-listed by the S&P board due to poor health and flagging profits.

Other countries also have stock market indices that track their markets. Two examples are the TSX bank Index and TSX 60, which tracks the Canadian Toronto Stock Exchange.

If you spend any time looking at market indices online, you'll find a slew of lesser-known and unknown ones, all with their own take on how the market should be described. The top three indices are plenty for most people, having as they do their own differing corporations and weightings, with the resulting confusion in actual numbers reported at the end of the day.

Probably the most important thing the various stock market indices do for the average Joe and Jane is to tell them when to be afraid. Now, it's important to truly know when to be afraid, instead of letting the 6 o'clock News staff tell you, because they like to scare you: it's what often passes for news these days. So, remember that when the News announces a drop of say, 30 points in the Dow, that's out of a total of around 11,000. In other words, not a very big deal. Keep in mind that, in 1929, when the stock market crashed, it lost more than 80% of its value, and the Dow total at the time just before the crash was under 400 (as opposed to the more than 11,000 we see today). If the stock market lost 80% of its value today, it would zoom in points down from around 11,000 to about 2,200. Believe me, it's something you would notice!

If you're new to reading the market indices, pay attention to the numbers and points gained or lost, but pay especial attention to the percentages. The percentages are calculated from the numbers. What's easier; knowing that you got 467 points out of 500 on a test, or knowing that you got 93.4%? Probably the second one, if you care about your overall grade. When you look at the stock market index, whether it's the Dow, the NASDAQ or one of the many others, look at the percentage of change to get an idea of the general stability. A change of 3 or 4 % (often expressed as .03 or .04) is normal, and nothing to fear.

Stock indices are used for all sorts of sexy things: individual brokers or brokerage firms and mutual fund managers may have their stock picking capabilities compared to the rise and fall of the general market, so you can (theoretically) tell a good manager or brokerage by comparing how well their pick do compared to the overall market. In this way and many others, indices like the Dow, the AMEX index, the NASDAQ and the S&P 500 are used as benchmarks. Because they represent different financial sectors of the country, the indices can also be compared to each other. On any given day, the Dow may go up and the NASDAQ down, but usually just by a little bit.

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1. Customize your budget with your current needs, wants and future goals in mind.

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