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 | |
EIN.: 232311358 | Fiscal Year End: 0930
Type: 497 | Act: 33 | File No.: 002-92948 | Film No.: 241050306