NUMBER
[001]
CAPITAL STOCK

                                   ETF Shares

                        Vanguard Mid-Cap Value Index Fund
                                 A SERIES of the
                              VANGUARD INDEX FUNDS
                          (A Delaware Statutory Trust)

  THIS CERTIFIES that CEDE & CO. is the holder of the current outstanding
number of ETF Shares issued by the Vanguard Mid-Cap Value Index Fund (the
"Fund") shown from time to time on the records of the Vanguard Index Funds, a
Delaware statutory trust (the "Trust"), as represented by this certificate of
the Trust, transferable only on the books and records of the Trust by the holder
hereof in person or by duly authorized attorney-in-fact upon surrender of this
Certificate properly endorsed. This Certificate is not valid until countersigned
by the transfer agent of the Trust.

  The registered holder of this Certificate is entitled to all the rights,
interest and privileges of a holder of ETF Shares as provided by the Declaration
of Trust, the by-laws of the Trust, and the Vanguard Funds Multiple Class Plan
as from time to time amended, which are incorporated by reference herein.

  This Certificate is executed on behalf of the Trust and the obligations hereof
are not binding upon any of the Trustees, officers or shareholders of the Trust
individually, but are binding only upon the assets and property of the Fund.

  IN WITNESS WHEREOF, the said Trust has caused this Certificate to be signed by
its duly authorized officer.

Countersigned:                              Dated: August 17, 2006

JPMORGAN CHASE BANK (the Transfer Agent)    VANGUARD INDEX FUNDS (the Trust)
By:  /s/ Nela D'Agosta                      /s/ John J. Brennan
     -----------------                      -------------------
     Authorized Signature                   Chairman and Chief Executive Officer

Unless this Certificate is presented by an authorized representative of The
Depository Trust Company, a New York corporation ("DTC"), to the Trust or its
transfer agent for registration of transfer, exchange or payment, and any
certificate issued is registered in the name of Cede & Co., or in such other
name as is requested by an authorized representative of DTC (and any payment is
made to Cede & Co. or to such other entity as is requested by an authorized
representative of DTC), ANY TRANSFER, PLEDGE OR


OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch
as the registered owner hereof, Cede & Co., has an interest herein.