WBSIX Fees and Costs — William Blair Small Cap Growth Fund, Class I
Data updated: 2026-08-14
The net expense ratio is 0.99%: a 0.94% 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 $674K in broker commissions, 0.0726% of average net assets, and portfolio turnover was 94%.
WBSIX Fees and Expenses
Annual operating expenses and sales charges of WBSIX. Prospectus, as of December 31, 2025.
| Annual operating expenses | |
|---|---|
| Management fee | 0.94% |
| 12b-1 fee | 0.00% |
| Other expenses | 0.18% |
| Gross expense ratio | 1.12% |
| Fee waiver | −0.13% |
| Net expense ratio | 0.99% |
| 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 |
WBSIX Costs Over Time
On $10,000 invested in WBSIX, assuming 5% a year before costs, total costs come to $664 over 5 years, cutting the return by 1.12% 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 0.99%) | $104 | $324 | $562 |
| Trading costs (broker commissions) | $8 | $24 | $41 |
| Lost growth on money paid in costs | $0 | $17 | $61 |
| Total costs | $112 | $365 | $664 |
| Value after costs | $10,388 | $11,211 | $12,099 |
| Impact on return, per year | 1.12% | 1.12% | 1.12% |
WBSIX 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): 0.0726%
- Total broker commissions: $674K
- Bought from dealers (principal trades, not a cost): $6.9B
- Portfolio turnover (prospectus): 94%
- Securities lending: none during the year
WBSIX Agency Brokers
Commissions paid.
| Broker | Amount | Share |
|---|---|---|
| Goldman Sachs & Co. LLC | $79K | 17.49% |
| Piper Sandler & Co. | $59K | 13.03% |
| BofA Securities, Inc. | $55K | 12.24% |
| Robert W. Baird & Co. Incorporated | $49K | 10.87% |
| Virtu Americas LLC | $42K | 9.37% |
| Liquidnet, Inc. | $42K | 9.26% |
| J.P. Morgan Securities LLC | $35K | 7.76% |
| TD Securities (USA) LLC | $34K | 7.55% |
| BMO Capital Markets Corp. | $29K | 6.44% |
| Jefferies LLC | $27K | 5.99% |
WBSIX Dealer Counterparties
Securities bought directly from dealers (principal trades).
| Broker | Amount | Share |
|---|---|---|
| State Street Bank and Trust Company | $6.8B | 99.58% |
| Goldman Sachs & Co. LLC | $15.8M | 0.23% |
| J.P. Morgan Securities LLC | $8.2M | 0.12% |
| Jefferies LLC | $4.9M | 0.07% |
William Blair Small Cap 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 |
|---|---|---|---|
| WBSRX | Class R6 | 0.94% | none |
| WBSIX | Class I | 0.99% | none |
| WBSNX | Class N | 1.24% | 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.