https://www.reuters.com/article/us-usa-stocks-weekahead-idUSKBN2712PB

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NEW YORK (Reuters) - As a technology-driven rally brings U.S. stock indexes within striking distance of fresh records, concerns that big names are over-extended and that new regulation might be coming have some investors diversifying beyond the rally leaders. Slideshow ( 2 images ). The S&P 500's five biggest companies, Apple Inc AAPL.O , Microsoft Corp MSFT.O , Amazon.com Inc AMZN.O , Alphabet Inc GOOGL.O and Facebook Inc FB.O now account for 28% of the index's weighting and have been responsible for 25% of its earnings, Goldman Sachs said earlier this month. On average, these tech and internet-driven stocks have gained 49.23% this year, compared to a 7% gain for the S&P 500 - and are up ... Full story

16 October

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