Exchange-traded funds offer a convenient way to invest in sectors or niches that interest you. If you'd like to add some technology-heavy companies to your portfolio because you expect the world's demand for new and better electronic products and services to grow over the long haul, the First Trust NASDAQ-100-Tech Index ETF
ETFs often sport lower expense ratios than their mutual fund cousins. The First Trust ETF's expense ratio -- its annual fee -- is 0.60%. The fund is fairly small, too, so if you're thinking of buying, beware of occasionally large spreads between its bid and ask prices. Consider using a limit order if you want to buy in.
This ETF has performed well, beating the world markets over the past three and five years. As with most investments, of course, we can't expect outstanding performances in every quarter or year. Investors with conviction need to wait for their holdings to deliver.
With a low turnover rate of 21%, this fund isn't frantically and frequently rejiggering its holdings, as many funds do.
What's in it?
Plenty of tech companies had strong performances over the past year. Hard-drive specialist Seagate Technology
Other companies didn't do as well last year, but could see their fortunes change in the coming years. Semiconductor giant Broadcom
Chinese search-engine giant Baidu
The big picture
Demand for technology isn't going away anytime soon. A well-chosen ETF can grant you instant diversification across any industry or group of companies -- and make investing in and profiting from it that much easier.
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Longtime Fool contributor Selena Maranjian, whom you can follow on Twitter, owns shares of Intel, but she holds no other position in any company mentioned. Click here to see her holdings and a short bio. The Motley Fool owns shares of Baidu and Intel. Motley Fool newsletter services have recommended buying shares of Baidu and Intel. The Motley Fool has a disclosure policy.