Vanguard Total Stock Market Index Fund Admiral Shares -- Own the Whole Stock Market

If you want to buy the entire stock market, there's an easier way than submitting an order to buy each and every publicly traded stock. By making an investment in Vanguard Total Stock Market Index Fund Admiral Shares you'll own the Total Market Index and pay an expense ratio so low you might not even notice it.

What you get with the Total Stock Market Index Fund

The Vanguard fund tracks the CRSP U.S. Total Market Index, which represents "approximately 100% of the investable U.S. stock market," according to regulatory filings. Vanguard's investor website reveals that the fund held a stake in a whopping 3,668 stocks as of April 2016, representing virtually all of the stocks that regularly trade on the New York Stock Exchange and Nasdaq.

The fund weights its portfolio by company market capitalization. As of April 2016, Apple was its largest holding at about 2.3% of assets. The iPhone maker is more than 35,000 times larger by market cap than the fund's smallest holdings, which can have market caps as small as $15 million.

Because the Vanguard Total Stock Market Index Fund weights its portfolio by market capitalization, larger companies make up the majority of its portfolio. Companies valued at more than $24 billion made up about two-thirds (65.9%) of its portfolio. Only 7.2% of its portfolio was invested in small-cap stocks, or those with a market value of $2.9 billion or less.

A mostly large-cap fund

The Total Stock Market Index Fund's performance doesn't deviate much from true large-cap indexes like the S&P 500, because of the fund's portfolio weighting. As the chart below shows, the Total Stock Market fund has beaten the S&P 500 over 10- and 15-year periods, but failed to match it over shorter time periods.

The difference in performance is relatively modest, amounting to just over half a percentage point for the most recent five-year period. The differential shrinks even further when one considers that it is impossible to buy the S&P 500 fee-free.

In general, you can expect the Total Stock Market to outperform large-cap indexes like the S&P 500 when small- and mid-cap stocks outperform, and underperform when small- and mid-caps underperform.

Importantly, the fund does exactly what it is designed to do -- deliver the returns of the total investable stock market minus a very small fee. The Admiral Shares carry a truly negligible annual expense ratio of just 0.05%. Investors who are lucky enough to have access to the least expensive share class, which is made available to investors who pony up $5 billion or more, pay just 0.01% of fund assets in annual expenses.

Of course, the difference between paying 0.05% and 0.01% is forgivable for the individual, amounting to only $40 per year on a $100,000 investment. When compared to actively managed mutual funds, whose expense ratios can rise as high as 1% or more per year, Vanguard's index funds are a certifiably cheap way to buy a diversified portfolio in a convenient mutual-fund wrapper.

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Jordan Wathen has no position in any stocks mentioned. The Motley Fool owns shares of and recommends Apple. The Motley Fool has the following options: long January 2018 $90 calls on Apple and short January 2018 $95 calls on Apple. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.

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