BIGIX Fees and Costs — William Blair International Growth Fund, Class I
Data updated: 2026-08-14
The net expense ratio is 0.90%: a 0.85% management fee plus 0.18% other expenses, less a 0.13% fee waiver. There are no sales loads or redemption fees. In fiscal 2025 the fund paid $1.3M in broker commissions, 0.1022% of average net assets, and portfolio turnover was 77%.
BIGIX Fees and Expenses
Annual operating expenses and sales charges of BIGIX. Prospectus, as of December 31, 2025.
| Annual operating expenses | |
|---|---|
| Management fee | 0.85% |
| 12b-1 fee | 0.00% |
| Other expenses | 0.18% |
| Gross expense ratio | 1.03% |
| Fee waiver | −0.13% |
| Net expense ratio | 0.90% |
| Sales charges | |
|---|---|
| Max front load | 0.00% |
| Max deferred load | — |
| Redemption fee | 0.00% |
| Expense limitation in place (N-CEN) | Yes |
| Fees waived or reduced during the year | Yes |
| Waived fees subject to recoupment | No |
BIGIX Costs Over Time
On $10,000 invested in BIGIX, assuming 5% a year before costs, total costs come to $627 over 5 years, cutting the return by 1.05% a year. Illustration, not a forecast: it assumes today's net expense ratio throughout (a fee waiver may end).
| $10,000 invested | Sell after 1 year | Sell after 3 years | Sell after 5 years |
|---|---|---|---|
| Value before costs | $10,500 | $11,576 | $12,763 |
| Fund expenses (net expense ratio 0.90%) | $94 | $295 | $511 |
| Trading costs (broker commissions) | $11 | $33 | $58 |
| Lost growth on money paid in costs | $0 | $16 | $57 |
| Total costs | $105 | $345 | $627 |
| Value after costs | $10,395 | $11,232 | $12,136 |
| Impact on return, per year | 1.05% | 1.05% | 1.05% |
BIGIX Trading Costs
Brokerage costs reported on SEC Form N-CEN for the fiscal year ending December 31, 2025.
- Explicit cost rate (commissions ÷ average net assets): 0.1022%
- Total broker commissions: $1.3M
- Bought from dealers (principal trades, not a cost): $3.6B
- Portfolio turnover (prospectus): 77%
- Securities lending: none during the year
BIGIX Agency Brokers
Commissions paid.
| Broker | Amount | Share |
|---|---|---|
| Morgan Stanley & Co. LLC | $239K | 22.63% |
| J.P. Morgan Securities LLC | $188K | 17.88% |
| BofA Securities, Inc. | $119K | 11.29% |
| CLSA Americas, LLC | $93K | 8.79% |
| Nomura Securities International, Inc. | $91K | 8.64% |
| UBS Securities LLC | $85K | 8.09% |
| SG Americas Securities, LLC | $70K | 6.63% |
| Jefferies LLC | $63K | 5.97% |
| BNP Paribas Securities Corp. | $57K | 5.45% |
| Goldman Sachs & Co. LLC | $49K | 4.63% |
BIGIX Dealer Counterparties
Securities bought directly from dealers (principal trades).
| Broker | Amount | Share |
|---|---|---|
| State Street Bank and Trust Company | $3.6B | 99.84% |
| Goldman Sachs & Co. LLC | $3.2M | 0.09% |
| J.P. Morgan Securities LLC | $2.5M | 0.07% |
William Blair International Growth Fund Share Classes
Net expense ratio and maximum front-end load of each share class, cheapest first.
| Ticker | Class | Net expense ratio | Front load |
|---|---|---|---|
| WBIRX | Class R6 | 0.85% | none |
| BIGIX | Class I | 0.90% | none |
| WBIGX | Class N | 1.15% | none |
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.