An exchange traded fund (“ETF”) is a type of security that resembles a hybrid between a mutual fund and a stock. Like mutual funds, ETFs are investment vehicles that hold several (often up to thousands) of securities following a certain theme (e.g. tracking particular indices or industry sectors). Like stocks, however, ETFs may be bought and sold throughout the day; may be purchased on margin or with market, limit, or stop-loss orders; may be shorted; often have put and call options based on them.
With increased news of illegal practices by mutual fund companies, ETFs have become a popular alternative. There are currently over 300 ETFs, the majority of which trade on the American Stock Exchange. SPDR 500 (AMEX: SPY), is the largest and oldest ETF and tracks the S&P 500. Another widely held exchange traded fund is the Nasdaq 100 Trust (AMEX: QQQ), which tracks the Nasdaq 100. There are also ETFs that track international indices such as the iShares FTSE/Xinhua China 25 ETF (Amex: FXI), those that mirror fixed income indices such as the iShares Lehman 1-3Yr Treasury Bond Fund (AMEX: SHY), and those that track specific sectors such as SPDR Energy (AMEX: XLE). ETFs for commodities and real estate investment trusts (REITs) are even available, such as the iShares Dow Jones US Basic Materials Index (AMEX: IYM) and the AEW Real Estate Income Fund (AMEX: RIF), respectively.
== Advantages ==
Because of their lower asset turnover and passive management, ETFs typically have lower expense ratios than comparable mutual funds. Studies have also suggested that few actively managed portfolios outperform the broad market in the long run, thus making index ETFs highly popular.
ETFs offer more trading options than similar mutual funds because of its ability to trade like a stock. An investor may purchase puts or calls on ETFs to mitigate portfolio risk, or hedge a stock play by purchasing an individual stock and shorting its sector ETF.
Traders who manage portfolios on a constant basis may prefer ETFs to mutual funds because ETFs are priced throughout the day.
The biggest selling point for ETFs, other than its lower expense ratios, is its tax efficiency. ETFs do not trigger capital gains distributions whenever a position in its portfolio is sold. The only capital gains taxes that investors pay are when they sell an ETF and realize a gain.
== Disadvantages ==
Transaction costs are the main downside for ETF investing. ETFs may only be purchased through a broker, and so those who prefer dollar cost averaging may experience lower net returns by choosing an ETF over a mutual fund.
As with stocks, there is typically a bid-ask spread on ETFs, meaning that you might purchase an ETF for $20.00 but only be able to sell it for $19.75.
Because of its passive management, index ETFs sometimes take more time than comparable mutual funds to rebalance and mirror the designated index. As a result, an ETF may occasionally trade slightly off of its net asset value, although usually only for a brief period of time.