FILE- In this Sept. 4, 2018, file photo Amazon and Apple stock prices are shown on an electronic screen at the Nasdaq MarketSite in New York. According to a January 2020 report by Morgan Stanley strategists, the five biggest U.S. stocks _ Apple, Microsoft, Google’s parent company, Amazon and Facebook _ have grown so explosively that they account for nearly 18% of the S&P 500 index by market value, when they make up just 1% of its population. Never before have five companies held such powerful sway over the index. (AP Photo/Mark Lennihan, File)
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