The American Stock Exchange, or AMEX, is the third largest stock exchange in the United States. As of the end of 2007, 592 US equities with a total market cap of $258 billion traded on the AMEX, with most of them being stocks from the small cap sector
The Russell Midcap Index is the benchmark for tracking midcap stocks in the U.S. Markets. The index is made up of of the smallest 800 companies listed on the Russell 1000 index and is weighted by the market capitalization of each stock.
The S&P 500, or the Standard & Poors 500, is a market capitalization based US stock equity index made up of 500 of the largest and most widely held companies
