Supplement to the Prospectuses and Summary Prospectuses for

Vanguard Total Stock Market Index Fund Summary Prospectus 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. April 26, 2019 Vanguard Total Stock Market Index Fund Investor Shares (VTSMX) ................
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