The S&P 500: An Increasingly Concentrated Bet
Over the weekend, I was looking at some research from JP Morgan that showed the percentage weight of the top ten stocks in the S&P 500 over time, and I admit that I was surprised. When we started Acropolis, 20-years ago in August, the top ten stocks made up about 24 percent of the index. I thought that was pretty high back then and was one of the reasons that… Read More