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 | MPCXX | |
| Class/Contract C000011539 | Investment Class | MAFIX | |
| Status | Name | Ticker Symbol | |
| CIK 0000741375 | |||
| Series S000004118 | Investment Grade Fixed Income 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 | ||
| Status | Name | Ticker Symbol | |
| CIK 0000741375 | |||
| Series S000004124 | Balanced Portfolio | ||
| Class/Contract C000011555 | Class P Shares | MBAAX | |
| Class/Contract C000011556 | Class I Shares | MPBAX | |
| Class/Contract C000011557 | Investment Class | MABIX | |
| 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 | |
| Status | Name | Ticker Symbol | |
| CIK 0000741375 | |||
| Series S000005590 | Core Fixed Income Portfolio | ||
| Class/Contract C000015254 | Class I Shares | ||
| Class/Contract C000015255 | Class P Shares | ||
| Status | Name | Ticker Symbol | |
| CIK 0000741375 | |||
| Series S000012836 | Long Duration Fixed Income Portfolio | ||
| Class/Contract C000034704 | Class I Shares | ||
| Class/Contract C000034705 | Class P Shares | ||
IRS No.: 000000000 | State of Incorp.: PA | Fiscal Year End: 0930
Type: N-CSRS | Act: 40 | File No.: 811-03980 | Film No.: 11892812
