Series and Classes/Contracts Information:
| Existing | |||
| Status | Name | Ticker Symbol | |
| CIK 0000822632 | |||
| Series S000037763 | William Blair International Leaders Fund | ||
| Class/Contract C000116468 | Class N | WILNX | |
| Class/Contract C000116469 | Class I | WILIX | |
| Class/Contract C000116470 | Class R6 | WILJX | |
IRS No.: 000000000 | Fiscal Year End: 1231
Type: NPORT-P | Act: 40 | File No.: 811-05344 | Film No.: 20624022