Some prominent Wall Street names are adding this high-flying ETF to their hedge funds.

An important part of investing is making sure that you're investing in stocks that fit your personal goals, time horizon, and risk tolerance. That's why, in some cases, the average person shouldn't follow all the moves made by billionaires and billion-dollar hedge funds.

However, there are instances where following billionaires' moves can be a smart choice, especially when it comes to exchange-traded funds (ETFs), because they're not reliant on a single company. One ETF that has gotten the attention of a few billionaires recently is the Invesco QQQ Trust ( QQQ -1.36% ) . In the first quarter, three prominent billionaire investors and hedge funds added to their positions:

QQQ's past performan

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