Vanguard Extended Market Index Fund
Vanguard Mid-Cap Index Fund
Vanguard Mid-Cap Growth Index Fund
Vanguard Mid-Cap Value Index Fund
Vanguard Small-Cap Index Fund
Vanguard Small-Cap Growth Index Fund
Vanguard Small-Cap Value Index Fund

Supplement to the Prospectus

Each Fund's dividend distribution frequency has changed from
annual to quarterly. The first quarterly dividend payment will
be made in September 2015 and will include income earned from
the first through third quarters. The fourth quarter
payment will be made in December 2015.

(C) 2015 The Vanguard Group, Inc. All rights reserved.
Vanguard Marketing Corporation, Distributor. PS DIVC 042015