Index funds are a popular way to easily invest in the stock market. Read our guide to make sure you invest in them correctly.

Index funds have grown to be one of the single most popular investment vehicles in the United States. According to a 2019 report from Morningstar, half of all U.S. stock investments are in passive funds, such as index funds.
The low cost and market-matching performance make them an attractive way to invest for beginners and experts alike. Here’s a look at how to invest in index funds and some of the best brokers you can use to get started.