XLK vs QQQ. Both have similar holdings(heavy tech). XLK is much cheaper to own and also out-performs QQQ. Make sure to always do your research on what you are holding : r/HighCaliberInvesting

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What's the difference between XLK and QQQ? - Quora

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What's the difference between XLK and QQQ? - Quora

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Comparing Technology Juggernaut ETFs: QQQ Vs. XLK (NASDAQ:QQQ

ETF Battles: QQQ vs. XLK, who wins?

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What's the difference between XLK and QQQ? - Quora