# William Blair Institutional International Growth Fund

William Blair Institutional International Growth Fund is a registered fund series of WILLIAM BLAIR FUNDS (series S000008605). Net assets $726.4M as of 2026-03-31.

## Profile

- Series ID: S000008605
- Registrant: WILLIAM BLAIR FUNDS
- LEI: ZFUC7FQ8P4Z2TL4PXN85
- Net assets: $726.4M
- Total assets: $728.3M
- As of: 2026-03-31

## Advisers

- [William Blair Investment Management, LLC (Advisor)](https://search.stillhousedata.com/firm/173961)

## Top holdings (168 reported)

_Showing 15 of 168 holdings by value._

| Holding | Ticker | Value | % of fund |
| --- | --- | --- | --- |
| [Taiwan Semiconductor Manufacturing Co Ltd](https://search.stillhousedata.com/security/874039100) | — | $33.2M | 457.16% |
| ASML Holding NV | — | $20.3M | 279.88% |
| Fixed Income Clearing Corp. | — | $16.6M | 229.12% |
| Samsung Electronics Co Ltd | — | $15.0M | 207.15% |
| SK hynix Inc | — | $14.4M | 198.37% |
| AstraZeneca PLC | — | $14.0M | 193.34% |
| Tencent Holdings Ltd | — | $12.9M | 178.16% |
| Tokio Marine Holdings Inc | — | $10.5M | 144.48% |
| Iberdrola SA | — | $8.9M | 122.97% |
| BAE Systems PLC | — | $8.8M | 120.62% |
| IHI Corp | — | $8.4M | 116.28% |
| Sumitomo Mitsui Financial Group Inc | — | $8.4M | 115.42% |
| Hon Hai Precision Industry Co Ltd | — | $8.4M | 115.11% |
| Hoya Corp | — | $8.2M | 112.88% |
| Sumitomo Electric Industries Ltd | — | $8.2M | 112.24% |

## Net asset history

| Report date | Net assets |
| --- | --- |
| 2026-03-31 | $726.4M |
| 2025-12-31 | $834.5M |
| 2025-09-30 | $968.5M |
| 2025-06-30 | $976.0M |
| 2025-03-31 | $899.8M |
| 2024-12-31 | $897.0M |
| 2024-09-30 | $1.0B |
| 2024-06-30 | $973.9M |

## More

- [Registrant: WILLIAM BLAIR FUNDS](https://search.stillhousedata.com/registrant/822632)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/fund/S000008605.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.