What are QQQ stocks/ETFs exactly? Like, why 'QQQ'? What do the Q's represent or where do they come from? - Quora

QQQ ETF Risks and Rewards

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QQQQ: Definition, Composition, and Current Ticker

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Should I invest in PowerShares QQQ Trust ETF (NASDAQ: QQQ)? Historical data shows it outperforms S&P500. - Quora

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Besides market cap weighting, how does QQQ ETF decide to choose stocks? - Quora

What are the best alternatives to ETFs like VOO, SQQQ, TQQQ, UVXY as we can't buy them in Europe? ETFs like VUSA have much worse performance. Do people protest against the PRIIPs

Ignore Trader Noise, Buy QQQ Now (NASDAQ:QQQ)

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