The smartest investors know that a great way to get broad market exposure is to buy exchange-traded funds (ETFs). On the technology front, the Nasdaq 100 is a frequently favored index. Which is why Invesco QQQ Trust (NASDAQ: QQQ) is an ETF you might want to look at. Just make sure you know these three things before you buy it.

The Nasdaq 100 is called the Nasdaq 100 because it is an index of 100 of the largest non-financial stocks that trade on the exchange. Historically, this exchange had been a favorite listing choice for smaller technology companies. Many of those companies are no longer small, so the index has a heavy exposure to technology. That leads some investors to think of the Nasdaq 100 as strictly a tech index. It isn't. 

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Source Fool.com