Stock Trading.

The Standard & Poor's 500 Index is a capitalization-weighted index of 500 stocks from a broad range of industries. The component stocks are weighted according to the total market value of their outstanding shares. The impact of a component's price change is proportional to the issue's total market value, which is the share price times the number of shares outstanding. These are summed for all 500 stocks and divided by a predetermined base value. The base value for the S&P 500 Index is adjusted to reflect changes in capitalization resulting from mergers, acquisitions, stock rights, substitutions, etc.

Exchange Traded Funds (ETFs) & iShares, Options & Futures Trading / Futures Contracts

Investors appreciate many features of the SPX options, including:

• the fact that the options are tied to the world's leading benchmark for institutional investors;

• SPX options are powerful, flexible tools that allow investors to synthetically adjust their positions to a 500-stock portfolio;

• these listed options minimize counterparty risk - they are guaranteed by The Options Clearing Corporation, a triple-A rated clearinghouse.

• there is price discovery in competitive, SEC-regulated auction markets.

S&P 500 Index Exchange Traded Funds & Index Funds
With ETFs based on broad-market, sector and international indexes, you have a wide range of investment opportunities. You have the ability to establish long-term investments in the market performance of the leading companies in the leading industries in the United States, or you can custom tailor asset allocations using a range of ETFs to fit your particular investment needs or goals. You can hold ETFs based on a broad-market index as a core investment, for example, then use additional ETFs to increase your exposure in sector and/or international index performance.

The SPDR Trust Series I is a pooled investment designed to provide investment results that generally correspond to the price and yield performance, before fees and expenses, of the S&P 500® Index. iShares S&P 500 Index Fund seeks investment results that correspond generally to the price and yield performance, before fees and expenses, of the S&P 500 Index . There is no assurance that the performance of the S&P 500 Index can be fully matched.

S&P 500 index futures trading contracts are traded through an auction-like process, with all bids and offers on each contract made public. Through this, a prevailing market price is reached for each contract, based primarily on the laws of supply and demand. This forum is a useful - and essential - element in a free market economy. You might be surprised to know that the futures markets are rarely used to actually buy or sell the physical commodity or financial instrument being traded; they're used for price estimation, risk management, and for some people, investment and profit.

Related Links:

• Stock Market Directory - complete source of financial, trading and investments articles and resources that could become handy for beginner as well as for professional investors.

• S&P 500 Quotes - S&P 500 volume, advance decline and other quotes as well as quotes for the S&P 400 and S&P 600

• SPY Options - SPY options trading signals based on the advance S&P 500 technical analysis. Start using the unique and simple trading system.