Friday's S&P 500 and Nasdaq-100 rebalance may reflect concerns over concentration risk
It’s arguably the biggest stock story of 2023: a small number of giant technology companies now make up a very large part of big indexes like the S&P 500 and the Nasdaq-100. Five companies (Apple, Microsoft, Amazon, Nvidia and Alphabet) make up about 25% of the S&P 500. Six companies (Apple, Microsoft, […]
