Index-tracking mutual funds and exchange-traded funds have a lot of endearing qualities. Many of them pair low fees with a clear set of rules, which has been a big win for investors. But those ...

Index-tracking stock funds with $350 billion in assets are due for a big revamp later this month, after S&P Dow Jones Indices retooled its rules to curb the dominance of the largest companies.

Index-tracking stock funds with $350 billion in assets are due for a big revamp later this month, after S&P Dow Jones Indices retooled its rules to curb the dominance of the largest companies.