Competition in the passive index fund space is intense. While active managers try to stand out with performance, strategy or brand reputation, index fund providers compete primarily on scale and fees.

Index funds simplify investing by bundling hundreds or even thousands of stocks into a single investment vehicle, effectively creating diversified portfolios. The Vanguard S&P 500 ETF returned 299% ...

One of the world's largest asset managers, Vanguard, recently made changes to its fixed-income fund lineup, which now includes 118 mutual funds and exchange-traded funds (ETFs). On Feb. 11, the firm ...