Vanguard Total Stock Market Index Fund
Vanguard Large-Cap Index Fund
Vanguard Mid-Cap Index Fund
Vanguard Small-Cap Index Fund
Vanguard Value Index Fund
Vanguard Mid-Cap Value Index Fund
Vanguard Small-Cap Value Index Fund
Vanguard Growth Index Fund
Vanguard Mid-Cap Growth Index Fund
Vanguard Small-Cap Growth Index Fund
Supplement Dated July 29, 2026, to the Prospectus and Summary Prospectuses Dated April 28, 2026
Important Changes to the Funds
 
Morningstar, Inc. (“Morningstar”) has announced the acquisition of the Center for Research in Security Prices (“CRSP”) and its CRSP Market Indexes. As a result of these changes, the board of trustees of Vanguard Index Funds has approved the renaming of Vanguard Total Stock Market Index Fund, Vanguard Large-Cap Index Fund, Vanguard Mid-Cap Index Fund, Vanguard Small-Cap Index Fund, Vanguard Value Index Fund, Vanguard Mid-Cap Value Index Fund, Vanguard Small-Cap Value Index Fund, Vanguard Growth Index Fund, Vanguard Mid-Cap Growth Index Fund, and Vanguard Small-Cap Growth Index Fund (each, a “Fund” and collectively, the “Funds”) as shown below.
The name changes are effective as of July 29, 2026. Each Fund’s investment objective, strategies, and polices remain unchanged.
 
Current Fund Name
New Fund Name
New Corresponding Name
for ETF Share Class
Vanguard Total Stock Market
Index Fund
Vanguard Morningstar Total
Stock Market Index Fund
Vanguard Morningstar Total
Stock Market ETF
Vanguard Large-Cap Index
Fund
Vanguard Morningstar
Large-Cap Index Fund
Vanguard Morningstar
Large-Cap ETF
Vanguard Mid-Cap Index
Fund
Vanguard Morningstar
Mid-Cap Index Fund
Vanguard Morningstar
Mid-Cap ETF
Current Fund Name
New Fund Name
New Corresponding Name
for ETF Share Class
Vanguard Small-Cap Index
Fund
Vanguard Morningstar
Small-Cap Index Fund
Vanguard Morningstar
Small-Cap ETF
Vanguard Value Index Fund
Vanguard Morningstar Value
Index Fund
Vanguard Morningstar Value
ETF
Vanguard Mid-Cap Value
Index Fund
Vanguard Morningstar
Mid-Cap Value Index Fund
Vanguard Morningstar
Mid-Cap Value ETF
Vanguard Small-Cap Value
Index Fund
Vanguard Morningstar
Small-Cap Value Index Fund
Vanguard Morningstar
Small-Cap Value ETF
Vanguard Growth Index
Fund
Vanguard Morningstar
Growth Index Fund
Vanguard Morningstar
Growth ETF
Vanguard Mid-Cap Growth
Index Fund
Vanguard Morningstar
Mid-Cap Growth Index Fund
Vanguard Morningstar
Mid-Cap Growth ETF
Vanguard Small-Cap Growth
Index Fund
Vanguard Morningstar
Small-Cap Growth Index
Fund
Vanguard Morningstar
Small-Cap Growth ETF
 
Morningstar’s acquisition of CRSP will also result in name changes of each Fund’s target index, as shown below. These changes are effective as of July 29, 2026. 
Current Fund Name
Current Target Index Name
New Target Index Name
Vanguard Total Stock Market
Index Fund
CRSP US Total Market Index
Morningstar US Total Market
Index
Vanguard Large-Cap Index
Fund
CRSP US Large Cap Index
Morningstar US Large Cap
Index
Vanguard Mid-Cap Index
Fund
CRSP US Mid Cap Index
Morningstar US Mid Cap
Index
Vanguard Small-Cap Index
Fund
CRSP US Small Cap Index
Morningstar US Small Cap
Index
Vanguard Value Index Fund
CRSP US Large Cap Value
Index
Morningstar US Large Cap
Value Index
Vanguard Mid-Cap Value
Index Fund
CRSP US Mid Cap Value
Index
Morningstar US Mid Cap
Value Index
Vanguard Small-Cap Value
Index Fund
CRSP US Small Cap Value
Index
Morningstar US Small Cap
Value Index
Vanguard Growth Index
Fund
CRSP US Large Cap Growth
Index
Morningstar US Large Cap
Growth Index
Current Fund Name
Current Target Index Name
New Target Index Name
Vanguard Mid-Cap Growth
Index Fund
CRSP US Mid Cap Growth
Index
Morningstar US Mid Cap
Growth Index
Vanguard Small-Cap Growth
Index Fund
CRSP US Small Cap Growth
Index
Morningstar US Small Cap
Growth Index
 
 
© 2026 The Vanguard Group, Inc. All rights reserved.
Vanguard Marketing Corporation, Distributor.
PS MRN 072026

Vanguard Index Funds

Supplement Dated July 29, 2026, to the Statements of Additional Information Dated April 28, 2026

Important Changes to Vanguard Total Stock Market Index Fund, Vanguard Large-Cap Index Fund, Vanguard Mid-Cap Index Fund, Vanguard Small-Cap Index Fund, Vanguard Value Index Fund, Vanguard Mid-Cap Value Index Fund, Vanguard Small-Cap Value Index Fund, Vanguard Growth Index Fund, Vanguard Mid-Cap Growth Index Fund, and Vanguard Small-Cap Growth Index Fund (each, a “Fund” and collectively, the “Funds”)

Morningstar, Inc. (“Morningstar”) has announced the acquisition of the Center for Research in Security Prices (“CRSP”) and its CRSP Market Indexes. As a result of these changes, the board of trustees of Vanguard Index Funds has approved the renaming of each Fund, as shown below.

The name changes are effective as of July 29, 2026. Each Fund’s investment objective, strategies, and polices remain unchanged.

Current Fund Name

New Fund Name

New Corresponding Name for ETF Share

 

 

Class

Vanguard Total Stock Market Index Fund

Vanguard Morningstar Total Stock Market

Vanguard Morningstar Total Stock Market

 

Index Fund

ETF

Vanguard Large-Cap Index Fund

Vanguard Morningstar Large-Cap Index

Vanguard Morningstar Large-Cap ETF

 

Fund

 

Vanguard Mid-Cap Index Fund

Vanguard Morningstar Mid-Cap Index Fund

Vanguard Morningstar Mid-Cap ETF

Vanguard Small-Cap Index Fund

Vanguard Morningstar Small-Cap Index Fund

Vanguard Morningstar Small-Cap ETF

Vanguard Value Index Fund

Vanguard Morningstar Value Index Fund

Vanguard Morningstar Value ETF

Vanguard Mid-Cap Value Index Fund

Vanguard Morningstar Mid-Cap Value Index

Vanguard Morningstar Mid-Cap Value ETF

 

Fund

 

Vanguard Small-Cap Value Index Fund

Vanguard Morningstar Small-Cap Value

Vanguard Morningstar Small-Cap Value ETF

 

Index Fund

 

Vanguard Growth Index Fund

Vanguard Morningstar Growth Index Fund

Vanguard Morningstar Growth ETF

Vanguard Mid-Cap Growth Index Fund

Vanguard Morningstar Mid-Cap Growth

Vanguard Morningstar Mid-Cap Growth ETF

 

Index Fund

 

Vanguard Small-Cap Growth Index Fund

Vanguard Morningstar Small-Cap Growth

Vanguard Morningstar Small-Cap Growth

 

Index Fund

ETF

Morningstar’s acquisition of CRSP will also result in name changes of each Fund’s target index, as shown below. These changes are effective as of July 29, 2026.

Current Fund Name

Current Target Index Name

New Target Index Name

Vanguard Total Stock Market Index Fund

CRSP US Total Market Index

Morningstar US Total Market Index

Vanguard Large-Cap Index Fund

CRSP US Large Cap Index

Morningstar US Large Cap Index

Vanguard Mid-Cap Index Fund

CRSP US Mid Cap Index

Morningstar US Mid Cap Index

Vanguard Small-Cap Index Fund

CRSP US Small Cap Index

Morningstar US Small Cap Index

Vanguard Value Index Fund

CRSP US Large Cap Value Index

Morningstar US Large Cap Value Index

Vanguard Mid-Cap Value Index Fund

CRSP US Mid Cap Value Index

Morningstar US Mid Cap Value Index

Current Fund Name

Current Target Index Name

New Target Index Name

Vanguard Small-Cap Value Index Fund

CRSP US Small Cap Value Index

Morningstar US Small Cap Value Index

Vanguard Growth Index Fund

CRSP US Large Cap Growth Index

Morningstar US Large Cap Growth Index

Vanguard Mid-Cap Growth Index Fund

CRSP US Mid Cap Growth Index

Morningstar US Mid Cap Growth Index

Vanguard Small-Cap Growth Index Fund

CRSP US Small Cap Growth Index

Morningstar US Small Cap Growth Index

© 2026 The Vanguard Group, Inc. All rights reserved.

SAI 040A 072026

Vanguard Marketing Corporation, Distributor.