This is a cautionary tale for investors expecting continued outperformance from the Magnificent 7. In fact, rather than seeking additional exposure to these mega cap stocks, investors should ensure their portfolios are broadly diversified to capture the returns of whatever companies ascend to the top in the future.
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Why the Growth of ETFs Does Not Spell the End of Price Efficiency
We believe that concerns of decreasing price efficiency due to the growth of ETF investing are overstated. The ratio of trading volume to net flows has remained markedly greater than one, at 78 on average over the period and reaching a peak of about 172 in 2011. In other words, for every $1 flowing into ETFs there has averaged $78 in trading.