Vanguard Growth Index Fund

1 Vanguard Stock Index Large-Capitalization FundsProspectusApril 28, 2020 Investor Shares & Admiral SharesVanguardTotal Stock Market Index fund Investor Shares (VTSMX)VanguardTotal Stock Market Index fund Admiral Shares (VTSAX) Vanguard Large-Cap Index fund Investor Shares (VLACX) Vanguard Large-Cap Index fund Admiral Shares (VLCAX) Vanguard Value Index fund Investor Shares (VIVAX) Vanguard Value Index fund Admiral Shares (VVIAX) Vanguard Growth Index fund Investor Shares (VIGRX) Vanguard Growth Index fund Admiral Shares (VIGAX)See the inside front cover for important information about access to yourfund s annual and semiannual shareholder prospectus contains financial data for the Funds through the fiscal year ended December 31, Securities and Exchange Commission (SEC) has not approved or disapproved thesesecurities or passed upon the adequacy of this prospectus.

2 Any representation to the contrary information about access to shareholder reportsBeginning on January 1, 2021, as permitted by regulations adopted by theSEC, paper copies of your fund s annual and semiannual shareholder reportswill no longer be sent to you by mail, unless you specifically request , you will be notified by mail each time a report is posted on thewebsite and will be provided with a link to access the you have already elected to receive shareholder reports electronically, youwill not be affected by this change and do not need to take any action. You mayelect to receive shareholder reports and other communications from the fundelectronically by contacting your financial intermediary (such as a broker-dealeror bank) or, if you invest directly with the fund , by calling Vanguard at one ofthe phone numbers on the back cover of this prospectus or by logging on may elect to receive paper copies of all future shareholder reports free ofcharge.

3 If you invest through a financial intermediary, you can contact theintermediary to request that you continue to receive paper copies. If you investdirectly with the fund , you can call Vanguard at one of the phone numbers onthe back cover of this prospectus or log on Your election toreceive paper copies will apply to all the funds you hold through anintermediary or directly with fund SummariesTotal Stock Market Index Fund1 Large-Cap Index Fund7 Value Index Fund12 Growth Index Fund17 Investing in Index Funds23 More on the Funds24 The Funds and Vanguard30 Investment Advisor31 Dividends, Capital Gains, andTaxes32 Share Price35 Financial Highlights37 Investing With Vanguard45 Purchasing Shares45 Converting Shares48 Redeeming Shares50 Exchanging Shares54 Frequent-Trading Limitations55 Other RulesYou Should Know57 fund and Account Updates61 Employer-Sponsored Plans62 Contacting Vanguard63 Additional Information64 Glossary of InvestmentTerms66 Vanguard Total Stock Market Index FundInvestment ObjectiveThe fund seeks to track the performance of a benchmark Index that measuresthe investment return of the overall stock and ExpensesThe following table describes the fees and expenses you may pay if you buy andhold Investor Shares or Admiral Shares of the Fees(Fees paid directly from your)

4 Investment)Admiral SharesInvestor SharesSales Charge (Load) Imposed on PurchasesNoneNonePurchase FeeNoneNoneSales Charge (Load) Imposed on Reinvested Dividends NoneNoneRedemption FeeNoneNoneAccount Service Fee PerYear(for certain fund account balances below $10,000)$20 NoneAnnual fund Operating Expenses(Expenses that you pay each year as a percentage of the value of your investment)Admiral SharesInvestor SharesManagement Distribution FeeNoneNoneOther Annual fund Operating following examples are intended to help you compare the cost of investingin the fund s Investor Shares or Admiral Shares with the cost of investing inother mutual illustrate the hypothetical expenses that you wouldincur over various periods if you were to invest $10,000 in the fund s examples assume that the shares provide a return of 5% each year andthat total annual fund operating expenses remain as stated in the would incur these hypothetical expenses whether or not you were toredeem your investment at the end of the given period.

5 Although your actualcosts may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 YearsAdmiral Shares$4$13$23$51 Investor Shares$14$45$79$179 PortfolioTurnoverThe fund pays transaction costs, such as commissions, when it buys and sellssecurities (or turns over its portfolio). A higher portfolio turnover rate mayindicate higher transaction costs and may result in more taxes when Fundshares are held in a taxable costs, which are not reflected inannual fund operating expenses or in the previous expense examples, reducethe fund s performance. During the most recent fiscal year, the fund s portfolioturnover rate was 4% of the average value of its Investment StrategiesThe fund employs an indexing investment approach designed to track theperformance of the CRSP USTotal Market Index , which representsapproximately 100% of the investable stock market and includes large-,mid-, small-, and micro-cap stocks regularly traded on the NewYork StockExchange and fund invests by sampling the Index , meaning that itholds a broadly diversified collection of securities that, in the aggregate,approximates the full Index in terms of key keycharacteristics include industry weightings and market capitalization.

6 As well ascertain financial measures, such as price/earnings ratio and dividend RisksAn investment in the fund could lose money over short or long periods of should expect the fund s share price and total return to fluctuate within awide fund is subject to the following risks, which could affect theFund s performance: Stock market risk, which is the chance that stock prices overall will markets tend to move in cycles, with periods of rising prices and periodsof falling prices. In addition, the fund s target Index may, at times, becomefocused in stocks of a particular market sector, which would subject the fund toproportionately higher exposure to the risks of that sector. Index sampling risk, which is the chance that the securities selected for theFund, in the aggregate, will not provide investment performance matching thatof the fund s target Index .

7 Index sampling risk for the fund is expected tobe investment in the fund is not a deposit of a bank and is not insured orguaranteed by the Federal Deposit Insurance Corporation or any othergovernment Total ReturnsThe following bar chart and table are intended to help you understand the risksof investing in the fund . Because the eligibility requirements for the fund sAdmiral Shares were recently changed, annual total returns for the fund sAdmiral Shares are relevant for most investors. Accordingly, the informationpresented in the bar chart reflects the performance of the fund s bar chart shows how the performance of the fund s Admiral Shareshas varied from one calendar year to another over the periods tableshows how the average annual total returns of the share classes presentedcompare with those of the fund s target Index and other comparative indexes,which have investment characteristics similar to those of the SplicedTotal Stock Market Index reflects the performance of the MSCI US Broad MarketIndex through June 2, 2013, and the CRSP USTotal Market Index in mind that the fund s past performance (before and after taxes)

8 Does notindicate how the fund will perform in the future. Updated performanceinformation is available on our website bycalling Vanguard toll-free at Total Returns Vanguard Total Stock Market Index fund Admiral Shares2010201120122013201420152016201720 1820190%10%20%30%40%50%-10%-20% the periods shown in the bar chart, the highest and lowest returns for acalendar quarter were:Total 31, 30, 2011 Average Annual Total Returns for Periods Ended December 31, 20191 Year 5 Years 10 YearsVanguard Total Stock Market Index fund Admiral SharesReturn AfterTaxes on AfterTaxes on Distributions and Sale of fund Shares Total Stock Market Index fund Investor SharesReturn Indexes(reflect no deduction for fees, expenses, or taxes)MSCI US Broad Market Stock Market USTotal Market Actual after-tax returns depend on your tax situation and may differ from thoseshown in the preceding table.

9 When after-tax returns are calculated, it isassumed that the shareholder was in the highest individual federal marginalincome tax bracket at the time of each distribution of income or capital gains orupon redemption. State and local income taxes are not reflected in thecalculations. Please note that after-tax returns are shown only for the AdmiralShares and may differ for each share class. After-tax returns are not relevant for ashareholder who holds fund shares in a tax-deferred account, such as anindividual retirement account or a 401(k) plan. Also, figures captionedReturn4 After Taxes on Distributions and Sale of fund Sharesmay be higher than otherfigures for the same period if a capital loss occurs upon redemption and resultsin an assumed tax deduction for the AdvisorThe Vanguard Group, Inc.

10 ( Vanguard )Portfolio ManagersWalter Nejman, Portfolio Manager at Vanguard . He has co-managed the Fundsince C. O Reilly, Principal of Vanguard . He has managed the fund since 1994(co-managed since 2016).5 Purchase and Sale of fund SharesYou may purchase or redeem shares online through our website( ),by mail (The Vanguard Group, Box 1110, Valley Forge, PA 19482-1110), or bytelephone (800-662-2739).The minimum investment amount required to openand maintain a fund account for Admiral Shares is $3, minimuminvestment amount required to add to an existing fund account is generally $ Shares are generally available only to Vanguard funds that operate asfunds of funds and to certain retirement plan clients that receive recordkeepingservices from Vanguard .