Trader Brian Jones on Twitter: "10 stocks make up around 20% of every large cap Stock Fund. $AAPL, $MSFT, $GOOG, $AMZN etc. That's great when $AAPL is up 100% like the last year. But dangerous when it's not and there is no portfolio diversification." / Twitter

10 stocks make up around 20% of every large cap Stock Fund. $AAPL, $MSFT, $GOOG, $AMZN etc. That's great when $AAPL is up 100% like the last year. But dangerous when it's not and there is no portfolio diversification.