Introduction To Exchange-Traded Funds

What Is an ETF?

Think of an exchange-traded fund as a mutual fund that trades like a stock. Just like an index fund , an ETF represents a basket of stocks that reflect an index such as the S&P 500 . (To read more on this subject, see our Index Investing tutorial.) An ETF, however, isn't a mutual fund; it trades just like any other company on a stock exchange. Unlike a mutual fund that has its net-asset value (NAV) calculated at the end of each trading day, an ETF's price changes throughout the day, fluctuating with supply and demand. It is important to remember that while ETFs attempt to replicate the return on indexes, there is no guarantee that they will do so exactly. It is not uncommon to see a 1% or more difference between the actual index's year-end return and that of an ETF.

By owning an ETF, you get the diversification of an index fund plus the flexibility of a stock. Because ETFs trade like stocks, you can short sell them, buy them on margin and purchase as little as one share. Another advantage is that the expense ratios of most ETFs are lower than that of the average mutual fund. When buying and selling ETFs, you pay your broker the same commission that you'd pay on any regular trade.

Varieties of ETFs

The first exchange-traded fund 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:

Nasdaq-100 Index Tracking Stock (QQQQ)

This ETF represents the Nasdaq-100 Index, which consists of the 100 largest and most actively traded non-financial stocks on the Nasdaq, QQQQ offers broad exposure to the tech sector. Because it curbs the risk that comes with investing in individual stocks, the QQQQ is a great way to invest in the long-term prospects of the technology industry. The diversification it offers can be a huge advantage when there’s volatility in the markets. If a tech company falls short of projected earnings, it will likely be hit hard. Between 2000 and 2004, QQQQ was by far the most heavily traded index fund.