Form 497 - Definitive materials:
SEC Accession No. 0000932471-07-001470
Filing Date
2007-09-21
Accepted
2007-09-21 09:17:11
Documents
1
Effectiveness Date
2007-09-21

Document Format Files

Seq Description Document Type Size
1 PRIMECAP SUPPLEMENT psfr59.txt 497 2033
  Complete submission text file 0000932471-07-001470.txt   4129

Series and Classes/Contracts Information:

Existing
  Status Name Ticker Symbol
CIK 0000752177      
Series S000002568   Vanguard PRIMECAP Fund
Class/Contract C000007070   Investor Shares VPMCX
Class/Contract C000007071   Admiral Shares VPMAX
Mailing Address P.O. BOX 2600 VALLEY FORGE PA 19482
Business Address PO BOX 2600 VM #V34 VALLEY FORGE PA 19482 6106696289
VANGUARD CHESTER FUNDS (Filer) CIK: 0000752177 (see all company filings)

EIN.: 232311358 | Fiscal Year End: 0831
Type: 497 | Act: 33 | File No.: 002-92948 | Film No.: 071128214