Series and Classes/Contracts Information:
| Existing | |||
| Status | Name | Ticker Symbol | |
| CIK 0000822632 | |||
| Series S000034624 | William Blair Macro Allocation Fund | ||
| Class/Contract C000106600 | Class N | WMCNX | |
| Class/Contract C000106601 | Class I | WMCIX | |
| Class/Contract C000106602 | Class R6 | WMCJX | |
IRS No.: 000000000 | Fiscal Year End: 1231
Type: NPORT-P | Act: 40 | File No.: 811-05344 | Film No.: 21644682