"Buy an S&P 500 ETF" is maybe the most ubiquitous advice in the modern investing world. Financial advisers tell you to do it. I tell you to do it. And we even provide descriptions of the best index funds to buy.
For the most part, investors listen. Dozens of ETFs are tethered to the S&P 500 in various ways, but only four directly track the index. And they’re among the most popular funds on the planet:
