BlackRock Is Tweaking the S&P 500 Formula With Its New ETFs. Should You Be a Buyer?
The largest and most popular exchange-traded funds (ETFs) are those that track the performance of the S&P 500. In fact, the three largest ETFs as measured by assets under management are all ones that mimic the performance of this benchmark index. These funds include the Vanguard S&P 500 ETF (VOO -0.34%),