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SP 3061 Total World Bond ETF

Vanguard Total World Bond ETF

Summary Prospectus

December 22, 2023

Exchange-traded fund shares that are not individually redeemable and are listed on Nasdaq

Vanguard Total World Bond ETF Shares (BNDW)

The Fund’s statutory Prospectus and Statement of Additional Information dated December 22, 2023, 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 and http://personal.vanguard.com/us/literature/reports/ETFs. You can also obtain this information at no cost by calling 866-499-8473 or by sending an email request to online@vanguard.com.

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.

Investment Objective

The Fund seeks to track the performance of a broad, market-weighted index that measures the investment return of investment-grade U.S. bonds and investment-grade non-U.S. dollar-denominated bonds.

Fees and Expenses

The following table describes the fees and expenses you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.

Shareholder Fees
(Fees paid directly from your investment)


Transaction Fee on Purchases and Sales	None*
Transaction Fee on Reinvested Dividends	None*

None through Vanguard (Broker fees vary)

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


Management Fees	0.00 %
12b-1 Distribution Fee	None
Other Expenses	0.00 %
Acquired Fund Fees and Expenses	0.05 %
Total Annual Fund Operating Expenses	0.05 %

Example

The following example is intended to help you compare the cost of investing in the Fund (based on the fees and expenses of the acquired funds) 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 (of the Fund and its underlying funds) 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
$5	$16	$28	$64

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

Portfolio Turnover

The Fund may pay 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 14% of the average value of its portfolio.

Principal Investment Strategies

The Fund is a fund of funds and employs an indexing investment approach designed to track the performance of the Bloomberg Global Aggregate Float Adjusted Composite Index (the Index), which is a custom, USD-hedged index designed to track the market capitalized weights of the global investment-grade bond market and is comprised of the Bloomberg U.S. Aggregate Float Adjusted Index and the Bloomberg Global Aggregate ex-USD Float Adjusted RIC Capped Index.

The Fund intends to obtain its exposure to the bonds held in the Index by investing all, or substantially all, of its assets in two Vanguard bond index ETFs (underlying funds), rather than in individual securities held in the Index.

The underlying funds are Vanguard Total Bond Market Index Fund (“Vanguard Total Bond Market ETF”) and Vanguard Total International Bond Index Fund (“Vanguard Total International Bond ETF”). The Fund invests in the ETF share class of each underlying fund. The underlying funds’ bond holdings are a diversified mix of investment-grade U.S. and investment-grade non-U.S. government, corporate, and securitized bonds across yield curves and credit risks of multiple countries.

Each of the underlying funds seek to track the performance of an index that represents a subset of the Bloomberg Global Aggregate Float Adjusted Composite Index. Together, the two indexes tracked by the underlying funds comprise the Fund’s target index.

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, either directly or through its investments in the underlying funds, which could affect the Fund's performance, and the level of risk may vary based on market conditions:

• Interest rate risk, which is the chance that bond prices overall will decline because of rising interest rates. Interest rate risk should be moderate for the Fund.

• Income risk, which is the chance that a fund's income will decline because of falling interest rates.

• Credit risk, which is the chance that a bond issuer will fail to pay interest or principal in a timely manner or that negative perceptions of the issuer’s ability to make such payments will cause the price of that bond to decline. Credit risk should be low for the Fund.

• Country/regional risk, which is the chance that world events—such as political upheaval, financial troubles, or natural disasters—will adversely affect the value and/or liquidity of securities issued by foreign companies, governments, or government agencies. Because the Fund may indirectly invest a large portion of its assets in bonds of issuers located in a particular country or region, the Fund's performance may be hurt disproportionately by the poor performance of its investments in that area.

• Index sampling risk, which is the chance that the securities selected for a fund, in the aggregate, will not provide investment performance matching that of a fund's target index.

• Call risk, which is the chance that during periods of falling interest rates, issuers of callable bonds may call (redeem) securities with higher coupon rates or interest rates before their maturity dates. A fund would then lose any price appreciation above the bond’s call price and would be forced to reinvest the unanticipated proceeds at lower interest rates, resulting in a decline in the fund‘s income. Such redemptions and subsequent reinvestments would also increase the fund‘s portfolio turnover rate. Call risk should be low for the Fund.

• Currency hedging risk, which is the chance that the currency hedging transactions entered into by an underlying fund may not perfectly offset the underlying fund’s foreign currency exposure. An underlying fund may seek to mimic the performance of foreign bonds without regard to currency exchange rate fluctuations. To accomplish this goal, an underlying fund may attempt to offset, or hedge, its foreign currency exposure by entering into currency hedging transactions, primarily through the use of foreign currency exchange forward contracts. However, it generally is not possible to perfectly hedge a fund’s foreign currency exposure. An underlying fund will decline in value if it underhedges a currency that has weakened or overhedges a currency that has strengthened relative to the U.S. dollar. In addition, an underlying fund will incur expenses to hedge its foreign currency exposure. By entering into currency hedging

transactions, an underlying fund may eliminate any chance to benefit from favorable fluctuations in relevant currency exchange rates. Currency hedging risk for the Fund is low.

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

Because the Fund is an exchange-traded fund (ETF) and the Fund's shares are traded on an exchange, the Fund is subject to additional risks:

• The Fund’s ETF Shares are listed for trading on Nasdaq 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. Thus, you may pay more or less than NAV when you buy ETF Shares on the secondary market, and you may receive more or less than NAV when you sell those shares. The market price of the Fund's ETF Shares may be affected by the market prices of the underlying funds' ETF Shares.

• Although the Fund’s and underlying funds' ETF Shares are listed for trading on Nasdaq, it is possible that an active trading market may not be maintained, which could increase the Fund’s risks as disclosed in this prospectus.

• Trading of the Fund’s and underlying funds’ 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 and underlying funds’ ETF Shares may also be halted if (1) the shares are delisted from Nasdaq without first being listed on another exchange or (2) Nasdaq officials determine that such action is appropriate in the interest of a fair and orderly market or for the protection of investors. If trading of an underlying fund’s shares is halted, the Fund may not be able to purchase or dispose of underlying fund shares in a timely manner, which could increase the Fund’s risks as disclosed in this prospectus.

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's ETF Shares (based on NAV) in their first full calendar year. The table shows how the average annual total returns of the Fund compare with those of its target index and another comparative index, which have 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 Total World Bond ETF Shares1

1 The year-to-date return as of the most recent calendar quarter, which ended on September 30, 2023, was 0.56%.

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

	Total Return	Quarter
Highest	3.49 %	June 30, 2020
Lowest	-5.31 %	March 31, 2022

Average Annual Total Returns for Periods Ended December 31, 2022

	1 Year	Since Fund Inception	Fund Inception Date
Vanguard Total World Bond ETF Shares			9/4/2018
Based on NAV
Return Before Taxes	-12.92 %	-0.12 %
Return After Taxes on Distributions	-13.60	-1.12
Return After Taxes on Distributions and Sale of Fund Shares	-7.63	-0.47
Based on Market Price
Return Before Taxes	-12.91	-0.11
Bloomberg Global Aggregate Float Adjusted Composite Index (reflects no deduction for fees, expenses, or taxes)	-12.88 %	-0.01 %
Bloomberg Global Aggregate Float Adjusted Index in USD (reflects no deduction for fees, expenses, or taxes)	-16.18	-1.23

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

Joshua C. Barrickman, CFA, Principal of Vanguard and co-head of Vanguard’s Fixed Income Indexing Americas. He has managed the Fund since its inception in 2018.

Purchase and Sale of Fund Shares

ETF Shares may only be bought and sold in the secondary market through a brokerage firm. The price you pay or receive for ETF Shares will be the prevailing market price, which may be more (premium) or less (discount) 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 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.

An investor may incur costs attributable to the difference between the highest price a buyer is willing to pay to purchase ETF Shares (bid) and the lowest price a seller is willing to accept for ETF Shares (ask) when buying or selling shares in the secondary market (bid-ask spread). Recent information, including information on the Fund's NAV, market price, premiums and discounts, and bid-ask spreads, is available online at vanguard.com.

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.

CFA® is a registered trademark owned by CFA Institute.

”Bloomberg®” and Bloomberg Global Aggregate Float Adjusted Composite Index and Bloomberg Global Aggregate Float Adjusted Index in USD (“the Indices” or “Bloomberg Indices”) are service marks of Bloomberg Finance L.P. and its affiliates, including Bloomberg Index Services Limited (“BISL”), the administrator of the Indices (collectively, “Bloomberg”), and have been licensed for use for certain purposes by Vanguard.

Vanguard Total World Bond ETF is not sponsored, endorsed, sold or promoted by Bloomberg. Bloomberg does not make any representation or warranty, express or implied, to the owners of or counterparties to Vanguard Total World Bond ETF or any member of the public regarding the advisability of investing in securities generally or in Vanguard Total World Bond ETF particularly. The only relationship of Bloomberg to Vanguard is the licensing of certain trademarks, trade names and service marks and of the Bloomberg Global Aggregate Float Adjusted Composite Index and Bloomberg Global Aggregate Float Adjusted Index in USD, which is determined, composed and calculated by BISL without regard to Vanguard or Vanguard Total World Bond ETF. Bloomberg has no obligation to take the needs of Vanguard or the owners of Vanguard Total World Bond ETF into consideration in determining, composing or calculating the Bloomberg Global Aggregate Float Adjusted Composite Index and Bloomberg Global Aggregate Float Adjusted Index in USD. Bloomberg is not responsible for and has not participated in the determination of the timing of, prices at, or quantities of Vanguard Total World Bond ETF to be issued. Bloomberg shall not have any obligation or liability, including, without limitation, to Vanguard Total World Bond ETF customers, in connection with the administration, marketing or trading of Vanguard Total World Bond ETF.

BLOOMBERG DOES NOT GUARANTEE THE ACCURACY AND/OR THE COMPLETENESS OF THE BLOOMBERG GLOBAL AGGREGATE FLOAT ADJUSTED COMPOSITE INDEX AND BLOOMBERG GLOBAL AGGREGATE FLOAT ADJUSTED INDEX OR ANY DATA RELATED THERETO AND SHALL HAVE NO LIABILITY FOR ANY ERRORS, OMISSIONS OR INTERRUPTIONS THEREIN. BLOOMBERG DOES NOT MAKE ANY WARRANTY, EXPRESS OR IMPLIED, AS TO RESULTS TO BE OBTAINED BY VANGUARD, OWNERS OF VANGUARD TOTAL WORLD BOND ETF OR ANY OTHER PERSON OR ENTITY FROM THE USE OF THE BLOOMBERG GLOBAL AGGREGATE FLOAT ADJUSTED COMPOSITE INDEX AND BLOOMBERG GLOBAL AGGREGATE FLOAT ADJUSTED INDEX OR ANY DATA RELATED THERETO. BLOOMBERG DOES NOT MAKE ANY EXPRESS OR IMPLIED WARRANTIES AND EXPRESSLY DISCLAIMS ALL WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE WITH RESPECT TO THE BLOOMBERG GLOBAL AGGREGATE FLOAT ADJUSTED COMPOSITE INDEX AND BLOOMBERG GLOBAL AGGREGATE FLOAT ADJUSTED INDEX OR ANY DATA RELATED THERETO. WITHOUT LIMITING ANY OF THE FOREGOING, TO THE MAXIMUM EXTENT ALLOWED BY LAW, BLOOMBERG, ITS LICENSORS, AND ITS AND THEIR RESPECTIVE EMPLOYEES, CONTRACTORS, AGENTS, SUPPLIERS, AND VENDORS SHALL HAVE NO LIABILITY OR RESPONSIBILITY WHATSOEVER FOR ANY INJURY OR DAMAGES—WHETHER DIRECT, INDIRECT, CONSEQUENTIAL, INCIDENTAL, PUNITIVE OR OTHERWISE—ARISING IN CONNECTION WITH VANGUARD TOTAL WORLD BOND ETF OR BLOOMBERG GLOBAL AGGREGATE FLOAT ADJUSTED COMPOSITE INDEX AND BLOOMBERG GLOBAL AGGREGATE FLOAT ADJUSTED INDEX OR ANY DATA OR VALUES RELATING THERETO—WHETHER ARISING FROM THEIR NEGLIGENCE OR OTHERWISE, EVEN IF NOTIFIED OF THE POSSIBILITY THEREOF.

Vanguard Total World Bond ETF Shares—Fund Number 3061

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

Vanguard Marketing Corporation, Distributor.

SP 3061 122023