WBIRX
William Blair International Growth Fund
WILLIAM BLAIR FUNDS
Expense ratio1
0.85%
Net assets2
$1.01B
Holdings2
168
Category
International Equity
2025 return3
18.06%

Investment objective & strategy

As of April 30, 2025 · prospectus

Objective. The William Blair International Growth Fund seeks long-term capital appreciation.

Strategy. Under normal market conditions, the Fund invests at least 80% of its total assets in a diversified portfolio of equity securities, including common stocks and other forms of equity investments (e.g., securities convertible into common stocks), issued by companies of all sizes domiciled outside the U.S. that the Adviser believes have above-average growth, profitability and quality characteristics. The Adviser seeks investment opportunities in companies at different stages of development ranging from large, well-established companies to smaller companies at earlier stages of development. The Funds investments are normally allocated among at least six different countries and no more than 50% of the Funds equity holdings may be invested in securities of issuers in one country at any given time. Normally, the … Under normal market conditions, the Fund invests at least 80% of its total assets in a diversified portfolio of equity securities, including common stocks and other forms of equity investments (e.g., securities convertible into common stocks), issued by companies of all sizes domiciled outside the U.S. that the Adviser believes have above-average growth, profitability and quality characteristics. The Adviser seeks investment opportunities in companies at different stages of development ranging from large, well-established companies to smaller companies at earlier stages of development. The Funds investments are normally allocated among at least six different countries and no more than 50% of the Funds equity holdings may be invested in securities of issuers in one country at any given time. Normally, the Funds investments will be divided among Continental Europe, the United Kingdom, Canada, Japan and the markets of the Pacific Basin. The Fund may invest the greater of 35% of its net assets or twice the emerging markets component of the MSCI All Country World ex USA Investable Market Index (ACWI ex USA IMI) (net) in emerging markets, which include every country in the world except the United States, Canada, Japan, Australia, New Zealand, Hong Kong, Singapore and most Western European countries. In choosing investments, the Adviser performs fundamental company analysis and focuses on stock selection. The Adviser generally seeks equity securities, including common stocks, of companies that historically have had superior growth, profitability and quality relative to local markets and relative to companies within the same industry worldwide, and that are expected to continue such performance. Such companies generally will exhibit superior business fundamentals, including leadership in their field, quality products or services, distinctive marketing and distribution, pricing flexibility and revenue from products or services consumed on a steady, recurring basis. These business characteristics should be accompanied by management that is shareholder return-oriented and that uses conservative accounting policies. Companies with above-average returns on equity, strong balance sheets and consistent, above-average earnings growth will be the primary focus. Stock selection will take into account both local and global comparisons. The Adviser will vary the Funds sector and geographic diversification based upon the Advisers ongoing evaluation of economic, market and political trends throughout the world. In making decisions regarding country allocation, the Adviser will consider such factors as the conditions and growth potential of various economies and securities markets, currency exchange rates, technological developments in the various countries and other pertinent financial, social, national and political factors.

Top holdings

As of March 31, 2026 · N-PORT
SecurityTickerValue% of fund
TAIWAN SEMIC MFG CO LTD SP ADR $46.28M 4.59%
ASML Holding NV $28.28M 2.80%
SAMSUNG ELECTRONICS CO LTD $20.93M 2.08%
SK HYNIX INC $20.06M 1.99%
ASTRAZENECA PLC $19.53M 1.94%
FIXED INC CLEARING CORP.REPO $19.30M 1.91%
TENCENT HOLDINGS LTD $18.00M 1.79%
TOKIO MARINE HOLDINGS INC COMMON STOCK 8766 $14.62M 1.45%
IBERDROLA SA $12.42M 1.23%
BAE SYSTEMS PLC $12.19M 1.21%
View all holdings →

Allocation by sector

As of March 31, 2026 · N-PORT
View portfolio breakdown →

Portfolio moves

Dec 31, 2025 → Mar 31, 2026
Opened
44
Exited
48
Increased
13
Decreased
111
Unchanged
0

How many positions this fund opened, exited, grew, trimmed, or left unchanged between its two most recent N-PORT snapshots — net changes between point-in-time reports, not a trade log.

View portfolio moves →

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Advisers

As of December 31, 2025 · N-CEN
FirmRole
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Adviser

Footnotes

  1. Expense ratio as of April 30, 2025, from the fund's prospectus.
  2. Net assets and holdings count as of March 31, 2026, from the fund's N-PORT filing.
  3. Total return for calendar year 2025, before tax and after fund expenses. Computed by compounding the twelve monthly total returns the fund reported in its SEC N-PORT filings for 2025 (the latest prospectus does not yet chart this year).

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