MarketWatch.com | Top Stories Follow Why your S&P 500 index fund might be more risky than the internet bubble The S&P 500’s record concentration to a handful of stocks at a time of relatively high valuations makes a case for broadening investment portfolios. https://www.marketwatch.com/story/why-your-s-p-500-index-fund-might-be-more-risky-than-the-internet-bubble-af1050e6?mod=mw_rss_topstories marketwatch.com
