Mutual Fund Summary Prospectus (497k)

Vanguard U.S. Liquidity Factor ETF

Summary Prospectus

March 27, 2020

Exchange-traded fund shares that are not individually redeemable and are listed on Cboe BZX Exchange, Inc.

Vanguard U.S. Liquidity Factor ETF Shares (VFLQ)

The Fund’s statutory Prospectus and Statement of Additional Information dated March 27, 2020, as may be amended or supplemented, are incorporated into and made part of this Summary Prospectus by reference.

Before you invest, you may want to review the Fund’s Prospectus, which contains more information about the Fund and its risks. You can find the Fund’s Prospectus and other information about the Fund online at www.vanguard.com/prospectus. You can also obtain this information at no cost by calling 866-499-8473 or by sending an email request to [e-mail].

See the inside front cover for important information about access to your fund’s annual and semiannual shareholder reports.

The Securities and Exchange Commission (SEC) has not approved or disapproved these securities or passed upon the adequacy of this prospectus. Any representation to the contrary is a criminal offense.

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Important information about access to shareholder reports

Beginning on January 1, 2021, as permitted by regulations adopted by the SEC, paper copies of your fund’s annual and semiannual shareholder reports will no longer be sent to you by mail, unless you specifically request them. Instead, you will be notified by mail each time a report is posted on the website and will be provided with a link to access the report.

If you have already elected to receive shareholder reports electronically, you will not be affected by this change and do not need to take any action. You may elect to receive shareholder reports and other communications from the fund electronically by contacting your financial intermediary (such as a broker-dealer or bank) or, if you invest directly with the fund, by calling Vanguard at one of the phone numbers on the back cover of this prospectus or by logging on to vanguard.com.

You may elect to receive paper copies of all future shareholder reports free of charge. If you invest through a financial intermediary, you can contact the intermediary to request that you continue to receive paper copies. If you invest directly with the fund, you can call Vanguard at one of the phone numbers on the back cover of this prospectus or log on to vanguard.com. Your election to receive paper copies will apply to all the funds you hold through an intermediary or directly with Vanguard.

Investment Objective

The Fund seeks to provide long-term capital appreciation by investing in stocks with lower measures of trading liquidity as determined by the advisor.

Fees and Expenses

The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund.

Shareholder Fees
(Fees paid directly from your investment)

Transaction Fee on Purchases and Sales	None through Vanguard (Broker fees vary)
Transaction Fee on Reinvested Dividends	None through Vanguard (Broker fees vary)

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Annual Fund Operating Expenses
(Expenses that you pay each year as a percentage of the value of your investment)

Management Fees	0.04%
12b-1 Distribution Fee	None
Other Expenses	0.10%
Total Annual Fund Operating Expenses1	0.14%

1	The Fund's custodian has contractually agreed to waive a portion of its custody fee based on an offset arrangement. The Fund's Total Annual Fund Operating Expenses after the custody fee offset was 0.13%.

Example

The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund's shares. This example assumes that the Fund provides a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

1 Year	3 Years	5 Years	10 Years
$14	$45	$79	$179

This example does not include the brokerage commissions that you may pay to buy and sell shares of the Fund.

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in more taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the previous expense example, reduce the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 49% of the average value of its portfolio.

Principal Investment Strategies

The Fund invests primarily in U.S. common stocks with the potential to generate higher returns relative to the broad U.S. equity market by investing in stocks with lower measures of trading liquidity as determined by the advisor. The portfolio will include a diverse mix of companies representing many different market

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sectors and industry groups. The advisor uses a quantitative model to evaluate all of the securities in an investment universe comprised of U.S. large-, mid-, and small-capitalization stocks and to construct a U.S. equity portfolio that seeks to achieve exposure to securities with lower measures of trading liquidity subject to a rules-based screen designed to promote diversification and to mitigate exposure to certain less liquid stocks. Securities with lower measures of trading liquidity may be identified by daily trading volume and the impact such trading has on the security's price. Under normal circumstances, at least 80% of the Fund’s assets will be invested in securities issued by U.S. companies.

Principal Risks

An investment in the Fund could lose money over short or long periods of time. You should expect the Fund's share price and total return to fluctuate within a wide range. The Fund is subject to the following risks, which could affect the Fund's performance:

•  Stock market risk, which is the chance that stock prices overall will decline. Stock markets tend to move in cycles, with periods of rising prices and periods of falling prices.

•  Liquidity risk, which is the chance that the Fund may not be able to sell a security in a timely manner at a desired price.

•  Investment style risk, which is the chance that returns from the types of stocks in which the Fund invests will trail returns from U.S. stock markets. Specific types of stocks tend to go through cycles of doing better or worse than other segments of the U.S. stock market. These periods have, in the past, lasted for as long as several years.

•  Manager risk, which is the chance that poor security selection will cause the Fund to underperform relevant benchmarks or other funds with a similar investment objective. In addition, significant investment in the financial services sector subjects the Fund to proportionately higher exposure to the risks of this sector.

Because ETF Shares are traded on an exchange, they are subject to additional risks:

•  The Fund’s ETF Shares are listed for trading on Cboe BZX Exchange, Inc., and are bought and sold on the secondary market at market prices. Although it is expected that the market price of an ETF Share typically will approximate its net asset value (NAV), there may be times when the market price and the NAV differ significantly. The existence of market volatility, disruptions to creations and redemptions, or potential lack of an active trading market for the ETF Shares (including through a trading halt), as well as other factors, may result in the ETF Shares trading above (at a premium) or below (at a discount) to NAV or to the

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intraday value of the Fund’s holdings. During such periods, you may pay more or receive less than NAV when you sell those shares.

•  Trading of the Fund’s ETF Shares may be halted by the activation of individual or marketwide trading halts (which halt trading for a specific period of time when the price of a particular security or overall market prices decline by a specified percentage). Trading of the Fund’s ETF Shares may also be halted if (1) the shares are delisted from Cboe BZX Exchange, Inc., without first being listed on another exchange or (2) Cboe BZX Exchange, Inc., officials determine that such action is appropriate in the interest of a fair and orderly market or for the protection of investors.

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Annual Total Returns

The following bar chart and table are intended to help you understand the risks of investing in the Fund. The bar chart shows the performance of the Fund (based on NAV) in its first full calendar year. The table shows how the average annual total returns of the Fund compare with those of a relevant market index, which has investment characteristics similar to those of the Fund. Keep in mind that the Fund's past performance (before and after taxes) does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447.

Annual Total Returns — Vanguard U.S. Liquidity Factor ETF

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During the periods shown in the bar chart, the highest and lowest returns for a calendar quarter were:

	Total Return	Quarter/Year
Highest	14.69%	March 31, 2019
Lowest	0.10%	September 30, 2019

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Average Annual Total Returns for Periods Ended December 31, 2019

	1 Year	Since Inception (Feb. 13, 2018)
Vanguard U.S. Liquidity Factor ETF
Based on NAV
Return Before Taxes	29.76%	11.22%
Return After Taxes on Distributions	29.25	10.79
Return After Taxes on Distributions and Sale of Fund Shares	17.86	8.56
Based on Market Price
Return Before Taxes	29.79	11.23
Russell 3000 Index (reflects no deduction for fees, expenses, or taxes)	31.02%	12.52%

Actual after-tax returns depend on your tax situation and may differ from those shown in the preceding table. When after-tax returns are calculated, it is assumed that the shareholder was in the highest individual federal marginal income tax bracket at the time of each distribution of income or capital gains or upon redemption. State and local income taxes are not reflected in the calculations. Please note that after-tax returns are not relevant for a shareholder who holds fund shares in a tax-deferred account, such as an individual retirement account or a 401(k) plan. Also, figures captioned Return After Taxes on Distributions and Sale of Fund Shares may be higher than other figures for the same period if a capital loss occurs upon redemption and results in an assumed tax deduction for the shareholder.

Investment Advisor

The Vanguard Group, Inc. (Vanguard)

Portfolio Manager

Antonio Picca, Senior Portfolio Manager at Vanguard. He has managed the Fund since its inception in 2018.

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Purchase and Sale of Fund Shares

You can buy and sell ETF Shares of the Fund through a brokerage firm. The price you pay or receive for ETF Shares will be the prevailing market price, which may be more or less than the NAV of the shares. The brokerage firm may charge you a commission to execute the transaction. Unless imposed by your brokerage firm, there is no minimum dollar amount you must invest and no minimum number of shares you must buy. ETF Shares of the Fund cannot be directly purchased from or redeemed with the Fund, except by certain authorized broker-dealers. These broker-dealers may purchase and redeem ETF Shares only in large blocks (Creation Units), typically in exchange for baskets of securities.

Tax Information

The Fund’s distributions may be taxable as ordinary income or capital gain. If you are investing through a tax-advantaged account, such as an IRA or an employer-sponsored retirement or savings plan, special tax rules apply.

Payments to Financial Intermediaries

The Fund and its investment advisor do not pay financial intermediaries for sales of Fund shares.

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Vanguard U.S. Liquidity Factor ETF Shares—Fund Number 4420

To request additional information about the Fund, please visit vanguard.com or contact us at 866-499-8473.

© 2020 The Vanguard Group, Inc. All rights reserved.

U.S. Patent Nos. 6,879,964; 7,337,138; 7,720,749; 7,925,573; 8,090,646; and 8,417,623.

Vanguard Marketing Corporation, Distributor.

SP 4420 032020