The S&P 500 Has Grown Top-Heavy. Here's Why That's a Problem.
It's been all systems go for the S&P 500 index this year. Indeed, with a year-to-date return of 17%, a rebound from last year's dreadful 18% decline is almost complete.
However, there is one underlying issue with the index that has me concerned. In fact, I think it's led some investors to become overly exposed to certain companies but more on that later.
Let's start by examining what's going on within the S&P 500, and why it matters to investors.
Source Fool.com