Big Companies Have Never Dominated the S&P 500 Like They Do Now
- Top 5 companies now make up ‘unprecedented’ share of benchmark
- Small-cap underperformance is causing macro concern for some
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At least one thing is clear after a tumultuous start to the year: For stock investors, bigger has never been better.
As the S&P 500 Index once again tests its record high, the top five publicly-traded American companies now make up a record 18% share of the benchmark’s capitalization -- higher than the tech bubble, Morgan Stanley said on Monday.