Vanguard S&P Mid-Cap 400 Growth Index Fund Summary Prospectus

Vanguard Long-Term Treasury Investor VUSTX 4 Vanguard Long-Term Treasury Admiral VUSUX Vanguard Mid-Cap Growth Index Investor VMGIX 4 Vanguard Mid-Cap Growth Index

Fund statistics are compared to their relevant S&P Dow Jones Indices capitalization-level index to determine the growth, core, or value style.. In some cases, S&P Dow

Fund statistics are compared to their relevant S&P Dow Jones Indices capitalization-level index to determine the growth, core, or value style.. In some cases, S&P Dow

Vanguard Mid-Cap Value Index Fund Admiral Shares (VMVAX)  The Fund’s statutory Prospectus and Statement of Additional Information dated April 29, 2021, as may be amended

S&P MAKES NO REPRESENTATION, CONDITION OR WARRANTY, EXPRESS OR IMPLIED, TO THE OWNERS OF THE FUND OR ANY MEMBER OF THE PUBLIC REGARDING THE ADVISABILITY OF INVESTING

Fund statistics are compared to their relevant S&P Dow Jones Indices capitalization-level index to determine the growth, core or value style.. In some cases, S&P Dow

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We have audited the accompanying statements of assets and liabilities, including the schedules of investments, of Vanguard S&P Small-Cap 600 Index Fund, Vanguard S&P