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William Blair Growth Fund Class N WBGSX
Historical return decomposition and an investable replication portfolio, using data through 2026-10-09.
Fund and replication metrics
| Measure | WBGSX | Replication |
|---|---|---|
| Annualized growth | 8.1% | 11.9% |
| Annualized volatility | 20.5% | 20.8% |
| Sharpe ratio | 0.48 | 0.64 |
| Maximum drawdown | 36.3% | 35.3% |
| Replication fit (R²) | 0.96 · Tracking error 4.3% | |
Replication portfolio
The published portfolio below is the investable basket used to model WBGSX’s historical return behavior.
| Ticker | Building block | Weight |
|---|---|---|
| VUG | Style · Growth | 50.4% |
| VOT | Mid-Cap · Growth | 16.4% |
| XLK | Sector · Technology | 14.9% |
| VBK | Small-Cap · Growth | 10.2% |
| VOX | Sector · Communication | 8.2% |