Because it includes 500 large, profitable businesses in the U.S., the S 500 is a popular benchmark to gauge the performance of the American stock market. It has done well for investors, producing a total return of 236% in the past decade, turning a $1,000 initial investment into almost $3,400 today.

Not many people will argue with the impressive returns that the S 500 has delivered. However, there is a magnificent exchange-traded fund (ETF) that follows a different index which investors should consider adding to their portfolios instead.

If you're not already, it's time to get familiar with the Invesco QQQ Trust (NASDAQ: QQQ). This ETF tracks the performance of the Nasdaq-100 Index, which includes the 100 largest nonfinancial companies that trade on the stock exchange.

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Source Fool.com