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Mutual Fund vs Index Fund

Mutual Fund and Index Fund are two Financial Markets & Investing concepts in AP Economics that students often mix up. In short: mutual fund is a mutual fund pools money from many investors to buy a professionally managed portfolio of stocks, bonds, or other assets. Meanwhile, index fund is an index fund is a fund that passively tracks a market index, such as the S&P 500, rather than picking stocks actively. Here is how they compare side by side.

Mutual Fund

A mutual fund pools money from many investors to buy a professionally managed portfolio of stocks, bonds, or other assets.

Investors buy shares of the fund and own a slice of everything it holds, getting diversification without picking securities themselves. Unlike ETFs, mutual fund shares trade only once a day at the closing net asset value, and actively managed funds charge higher fees than passive index funds.

Index Fund

An index fund is a fund that passively tracks a market index, such as the S&P 500, rather than picking stocks actively.

Because it just mirrors the index, it has very low fees and tends to match the market's return. Decades of evidence show low-cost index funds beat most actively managed funds after fees.

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