Series and Classes/Contracts Information:
| Existing | |||
| Status | Name | Ticker Symbol | |
| CIK 0000741375 | |||
| Series S000004114 | Core Plus Fixed Income Portfolio | ||
| Class/Contract C000011537 | Class P Shares | MFXAX | |
| Class/Contract C000011538 | Class I Shares | MPFIX | |
| Class/Contract C000113788 | Class H | ||
| Class/Contract C000113789 | Class L | ||
| Status | Name | Ticker Symbol | |
| CIK 0000741375 | |||
| Series S000004118 | Corporate Bond Portfolio | ||
| Class/Contract C000011548 | Class P Shares | ||
| Class/Contract C000011549 | Class I Shares | MPFDX | |
| Class/Contract C000057346 | Class H Shares | ||
| Class/Contract C000065127 | Class L Shares | ||
| Status | Name | Ticker Symbol | |
| CIK 0000741375 | |||
| Series S000004119 | Limited Duration Portfolio | ||
| Class/Contract C000011550 | Class I Shares | MPLDX | |
| Class/Contract C000052876 | Class P Shares | ||
| Class/Contract C000113790 | Class H | ||
| Class/Contract C000113791 | Class L | ||
| Status | Name | Ticker Symbol | |
| CIK 0000741375 | |||
| Series S000004124 | Global Strategist Portfolio | ||
| Class/Contract C000011555 | Class P Shares | MBAAX | |
| Class/Contract C000011556 | Class I Shares | MPBAX | |
| Class/Contract C000113792 | Class L | MSDLX | |
| Class/Contract C000113793 | Class H | MSBHX | |
| Status | Name | Ticker Symbol | |
| CIK 0000741375 | |||
| Series S000004127 | Mid Cap Growth Portfolio | ||
| Class/Contract C000011562 | Class P Shares | MACGX | |
| Class/Contract C000011563 | Class I Shares | MPEGX | |
| Class/Contract C000113794 | Class H | ||
| Class/Contract C000113795 | Class L | ||
| Status | Name | Ticker Symbol | |
| CIK 0000741375 | |||
| Series S000005590 | Core Fixed Income Portfolio | ||
| Class/Contract C000015254 | Class I Shares | ||
| Class/Contract C000015255 | Class P Shares | ||
| Class/Contract C000113796 | Class H | ||
| Class/Contract C000113797 | Class L | ||
| Status | Name | Ticker Symbol | |
| CIK 0000741375 | |||
| Series S000035938 | High Yield Portfolio | ||
| Class/Contract C000110149 | Class I | ||
| Class/Contract C000110150 | Class P | ||
| Class/Contract C000110151 | Class H | ||
| Class/Contract C000110152 | Class L | ||
IRS No.: 000000000 | State of Incorp.: PA | Fiscal Year End: 0930
Type: 497 | Act: 33 | File No.: 002-89729 | Film No.: 13633005