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William Blair Growth Fund (BGFIX)
Performance
Return for Risk
Dividends
Drawdowns
Volatility

Fund Info

CUSIP
093001865
Inception Date
Oct 1, 1999
Index Tracked
Russell 3000® Growth Index
Distribution Policy
Distributing
Asset Class
Equity
Asset Class Size
Large-Cap
Asset Class Style
Growth

Share Price Chart


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William Blair Growth Fund

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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S&P 500 Index

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%
*Multi-year figures are annualized to reflect compound growth (CAGR)

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%.


JanFebMarAprMayJunJulAugSepOctNovDecTotal
2026-1.56%-4.84%-8.60%-14.38%
20252.86%-6.41%-9.00%0.36%9.31%7.94%2.76%1.42%2.79%4.08%-2.68%-1.54%10.83%
20242.82%6.25%1.72%-4.44%3.76%3.34%-0.21%1.65%2.51%-1.32%7.10%28.72%61.08%
20239.66%-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
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.


BGFIX Risk / Return Rank: 1212
Overall Rank
BGFIX Sharpe Ratio Rank: 1313
Sharpe Ratio Rank
BGFIX Sortino Ratio Rank: 1414
Sortino Ratio Rank
BGFIX Omega Ratio Rank: 1414
Omega Ratio Rank
BGFIX Calmar Ratio Rank: 1010
Calmar Ratio Rank
BGFIX Martin Ratio Rank: 1010
Martin Ratio Rank
The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

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).


BGFIXBenchmarkDifference

Sharpe ratio

Return per unit of total volatility

0.37

0.90

-0.53

Sortino ratio

Return per unit of downside risk

0.70

1.39

-0.69

Omega ratio

Gain probability vs. loss probability

1.09

1.21

-0.12

Calmar ratio

Return relative to maximum drawdown

0.23

1.40

-1.17

Martin ratio

Return relative to average drawdown

0.72

6.61

-5.88

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.


0.00%10.00%20.00%30.00%40.00%50.00%$0.00$1.00$2.00$3.00$4.00$5.00$6.0020152016201720182019202020212022202320242025
Dividends
Dividend Yield
PeriodTTM20252024202320222021202020192018201720162015
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.


JanFebMarAprMayJunJulAugSepOctNovDecTotal
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, 2000523Oct 7, 20021246Sep 19, 20071769
-50.39%Nov 1, 2007339Mar 9, 2009491Feb 16, 2011830
-36.7%Nov 17, 2021229Oct 14, 2022331Feb 9, 2024560
-30.78%Feb 20, 202023Mar 23, 202070Jul 1, 202093
-25.02%Jan 24, 202552Apr 8, 202559Jul 3, 2025111

Volatility

Volatility Chart

The chart below shows the rolling one-month volatility.


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