The QQQs' top 10 positions are 54% of the fund vs 25.7% for the S&amp;P 500. The top of the sheet has the usual suspects: $AAPL (11.7% weighting), $MSFT (11.2%), $AMZN (10.0%), $GOOG (7.7%) &amp; $FB (4.5%). Why that matters here: https://t.co/QwhiIYXjza $QQQ $SPY https://t.co/ooBI7Yri6t