WBIGX — William Blair International Growth Fund
Data updated: 2026-05-28
WBIGX — William Blair International Growth Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Developed ex-US Information Technology Equity · $1.01B AUM · 1.47% expense ratio · 16.8% 1-yr return. From SEC regulatory filings.
WBIGX Fund Overview
WBIGX — William Blair International Growth Fund is a US mutual fund managed by William Blair Funds, categorised as Developed ex-US Information Technology Equity. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: William Blair Funds
- Category: Developed ex-US Information Technology Equity
- Assets under management: $1.01B
- 1-year return: 16.8%
- Ticker: WBIGX
- SEC CIK: 0000822632
- SEC series ID: S000008604
- Share class ID: C000023544
WBIGX Holdings
Top 10 holdings of William Blair International Growth Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Taiwan Semiconductor Manufacturing Co Ltd | 4.59% |
| ASML Holding NV | 2.81% |
| Samsung Electronics Co Ltd | 2.08% |
| SK hynix Inc | 1.99% |
| AstraZeneca PLC | 1.94% |
| Fixed Income Clearing Corp. | 1.91% |
| Tencent Holdings Ltd | 1.79% |
| Tokio Marine Holdings Inc | 1.45% |
| Iberdrola SA | 1.23% |
| BAE Systems PLC | 1.21% |
WBIGX Portfolio Allocation
Asset-class allocation of William Blair International Growth Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 97.7% |
| Cash & Equivalents | 1.9% |
WBIGX Performance
Total returns for WBIGX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -0.8% |
| 1 year | 16.8% |
| 3 years (annualised) | 8.2% |
| 5 years (annualised) | 1.6% |
WBIGX Risk Information
Risk metrics for WBIGX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 15.6%
WBIGX Costs and Fees
WBIGX costs about $147 per $10,000 invested per year in fund expenses.
- Net expense ratio: 1.47%
- Gross expense ratio: 1.31%
- Portfolio turnover: 77%
- Brokerage commissions: 10.22 bps of average net assets (SEC N-CEN)
WBIGX Cashflows
Over the 12 months to 2026-03, William Blair International Growth Fund had net outflows of $339.97M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | −$25.40M |
| 2026-02 | −$16.02M |
| 2026-01 | −$69.23M |
| 2025-12 | $89.88M |
| 2025-11 | −$34.27M |
| 2025-10 | −$30.92M |
WBIGX Debt Constituents
No individual debt constituents are reported in William Blair International Growth Fund's latest SEC N-PORT filing.
WBIGX Prospectus and SEC Filings
Official William Blair International Growth Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other Developed ex-US Information Technology Equity funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.