Well, we’ve included VADAX because it offers a slightly different and more complex approach than the others.Īs the name implies, VADAX is “equal weight” in the 500 components that make up the popular S&P 500 index-as opposed to the traditional makeup of the index, which is weighted by market value. With an expense ratio that is many times higher than the other S&P 500 index funds, you may be wondering what a mutual fund as pricey as VADAX is doing on this list.