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Performance
Performance Chart
The chart shows the growth of an initial investment of $10,000 in William Blair Growth Fund, comparing it to the performance of the S&P 500 index or another benchmark. All prices have been adjusted for splits and dividends.
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Returns By Period
William Blair Growth Fund (BGFIX) has returned -14.38% so far this year and 8.32% over the past 12 months. Looking at the last ten years, BGFIX has achieved an annualized return of 15.93%, outperforming the S&P 500 Index benchmark, which averaged 12.16% per year.
William Blair Growth Fund
- 1D
- -0.21%
- 1M
- -8.60%
- YTD
- -14.38%
- 6M
- -14.61%
- 1Y
- 8.32%
- 3Y*
- 23.27%
- 5Y*
- 11.71%
- 10Y*
- 15.93%
Benchmark (S&P 500 Index)
- 1D
- 2.91%
- 1M
- -5.09%
- YTD
- -4.63%
- 6M
- -2.39%
- 1Y
- 16.33%
- 3Y*
- 16.69%
- 5Y*
- 10.18%
- 10Y*
- 12.16%
Monthly Returns
Based on dividend-adjusted daily data since Sep 30, 1999, BGFIX's average daily return is +0.04%, while the average monthly return is +0.85%. At this rate, your investment would double in approximately 6.8 years.
Historically, 60% of months were positive and 40% were negative. The best month was Dec 2024 with a return of +28.7%, while the worst month was Oct 2008 at -19.1%. The longest winning streak lasted 8 consecutive months, and the longest losing streak was 6 months.
On a daily basis, BGFIX closed higher 52% of trading days. The best single day was Dec 19, 2024 with a return of +32.0%, while the worst single day was Mar 16, 2020 at -11.6%.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | -1.56% | -4.84% | -8.60% | -14.38% | |||||||||
| 2025 | 2.86% | -6.41% | -9.00% | 0.36% | 9.31% | 7.94% | 2.76% | 1.42% | 2.79% | 4.08% | -2.68% | -1.54% | 10.83% |
| 2024 | 2.82% | 6.25% | 1.72% | -4.44% | 3.76% | 3.34% | -0.21% | 1.65% | 2.51% | -1.32% | 7.10% | 28.72% | 61.08% |
| 2023 | 9.66% | -2.52% | 5.44% | 1.66% | 3.27% | 6.58% | 3.28% | -1.29% | -4.60% | -2.57% | 10.96% | 4.16% | 38.13% |
| 2022 | -8.72% | -2.65% | 2.42% | -11.94% | -2.68% | -8.25% | 12.00% | -5.36% | -10.96% | 5.06% | 5.86% | -6.28% | -29.60% |
| 2021 | -1.25% | 4.60% | 1.14% | 5.68% | -1.66% | 4.32% | 2.85% | 3.65% | -4.19% | 7.41% | -2.42% | 0.81% | 22.24% |
Benchmark Metrics
William Blair Growth Fund has an annualized alpha of 2.95%, beta of 1.03, and R² of 0.82 versus S&P 500 Index. Calculated based on daily prices since October 01, 1999.
- This fund captured 109.97% of S&P 500 Index gains but only 96.93% of its losses — a favorable profile for investors.
- This fund generated an annualized alpha of 2.95% versus S&P 500 Index — delivering returns beyond what market exposure alone would predict.
- With beta of 1.03 and R² of 0.82, this fund moves broadly in line with S&P 500 Index — much of its variation is explained by market exposure rather than independent behavior.
- Alpha
- 2.95%
- Beta
- 1.03
- R²
- 0.82
- Upside Capture
- 109.97%
- Downside Capture
- 96.93%
Expense Ratio
BGFIX has an expense ratio of 0.89%, placing it in the medium range.
Return for Risk
Risk / Return Rank
BGFIX ranks 12 for risk / return — in the bottom 12% of mutual funds on our site. This means you're taking on significantly more risk than the returns justify. Consider whether the potential upside is worth the volatility, or explore alternatives with better risk / return profiles.
Return / Risk — by metrics
The table below present risk-adjusted performance metrics for William Blair Growth Fund (BGFIX) and compare them to a chosen benchmark (S&P 500 Index).
| BGFIX | Benchmark | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.37 | 0.90 | -0.53 |
Sortino ratioReturn per unit of downside risk | 0.70 | 1.39 | -0.69 |
Omega ratioGain probability vs. loss probability | 1.09 | 1.21 | -0.12 |
Calmar ratioReturn relative to maximum drawdown | 0.23 | 1.40 | -1.17 |
Martin ratioReturn relative to average drawdown | 0.72 | 6.61 | -5.88 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
Explore BGFIX risk-adjusted metrics in detail
Dive deeper into individual metrics with historical trends, benchmark comparisons, and performance across different time periods.
Dividends
Dividend History
William Blair Growth Fund provided a 31.50% dividend yield over the last twelve months, with an annual payout of $2.95 per share.
| Period | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dividend | $2.95 | $2.95 | $6.07 | $1.24 | $0.37 | $1.75 | $1.68 | $0.97 | $3.07 | $3.92 | $1.03 | $1.74 |
Dividend yield | 31.50% | 26.97% | 48.26% | 9.67% | 3.60% | 11.74% | 12.31% | 8.62% | 33.23% | 34.05% | 8.35% | 12.91% |
Monthly Dividends
The table displays the monthly dividend distributions for William Blair Growth Fund. The dividends shown in the table have been adjusted to account for any splits that may have occurred.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | $0.00 | $0.00 | $0.00 | $0.00 | |||||||||
| 2025 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $2.95 | $2.95 |
| 2024 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $6.07 | $6.07 |
| 2023 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $1.24 | $1.24 |
| 2022 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.37 | $0.37 |
| 2021 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $1.75 | $1.75 |
Drawdowns
Drawdowns Chart
The Drawdowns chart displays portfolio losses from any high point along the way. Drawdowns are calculated considering price movements and all distributions paid, if any.
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Worst Drawdowns
The table below displays the maximum drawdowns of the William Blair Growth Fund. A maximum drawdown is a measure of risk, indicating the largest reduction in portfolio value due to a series of losing trades.
The maximum drawdown for the William Blair Growth Fund was 53.45%, occurring on Oct 7, 2002. Recovery took 1246 trading sessions.
The current William Blair Growth Fund drawdown is 19.83%.
Depth | Start | To Bottom | Bottom | To Recover | End | Total |
|---|---|---|---|---|---|---|
| -53.45% | Sep 5, 2000 | 523 | Oct 7, 2002 | 1246 | Sep 19, 2007 | 1769 |
| -50.39% | Nov 1, 2007 | 339 | Mar 9, 2009 | 491 | Feb 16, 2011 | 830 |
| -36.7% | Nov 17, 2021 | 229 | Oct 14, 2022 | 331 | Feb 9, 2024 | 560 |
| -30.78% | Feb 20, 2020 | 23 | Mar 23, 2020 | 70 | Jul 1, 2020 | 93 |
| -25.02% | Jan 24, 2025 | 52 | Apr 8, 2025 | 59 | Jul 3, 2025 | 111 |
Volatility
Volatility Chart
The chart below shows the rolling one-month volatility.
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