Varieties of ETFs
The first ETF was the S&P 500 index fund (nicknamed spiders because of their SPDR ticker symbol), which began trading on the American Stock Exchange (AMEX) in 1993. Today - tracking a wide variety of sector-specific, country-specific and broad-market indexes - there are hundreds of ETFs trading on the open market.

You can pretty much find an ETF for just about any kind of sector of the market. For example, if you were interested in the healthcare sector, perhaps Vanguard's Health Care Viper (ticker VHT) would be worth looking into. Does the Austrian market peak your interest? Then take a look at the ishares MSCI Austrian Index fund (ticker EWO). Or if you'd like exposure to the internet infrastructure sector, then maybe Merrill Lynch's HOLDRs (ticker IIH0) might be for you.

Some of the more popular ETFs have nicknames like cubes (QQQQ), vipers (VIPERs) and diamonds (DIAs). All ETFs are passively managed, meaning investors save big on management fees. Below you will find a closer look at some of the more popular ETFs: