LCGFX vs. WBSIX

Last updated Jun 5, 2026

LCGFX (William Blair Large Cap Growth Fund) and WBSIX (William Blair Small Cap Growth Fund) are both mutual funds - LCGFX is a Large Cap Growth Equities fund managed by William Blair, while WBSIX is a Small Cap Growth Equities fund managed by William Blair. Over the past 10 years, LCGFX returned 16.62%/yr vs 14.76%/yr for WBSIX. A 0.79 correlation means they provide meaningful diversification when combined. LCGFX charges 0.65%/yr vs 1.25%/yr for WBSIX.

Performance

LCGFX vs. WBSIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in William Blair Large Cap Growth Fund (LCGFX) and William Blair Small Cap Growth Fund (WBSIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, LCGFX achieves a 4.25% return, which is significantly lower than WBSIX's 15.71% return. Over the past 10 years, LCGFX has outperformed WBSIX with an annualized return of 16.62%, while WBSIX has yielded a comparatively lower 14.76% annualized return.

LCGFX

• 1D: -1.29%
• 1M: 4.87%
• YTD: 4.25%
• 6M: 2.76%
• 1Y: 15.75%
• 3Y*: 19.19%
• 5Y*: 10.35%
• 10Y*: 16.62%

WBSIX

• 1D: -0.43%
• 1M: 3.98%
• YTD: 15.71%
• 6M: 15.50%
• 1Y: 31.01%
• 3Y*: 19.50%
• 5Y*: 8.14%
• 10Y*: 14.76%

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

LCGFX vs. WBSIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
LCGFX William Blair Large Cap Growth Fund	4.25%	11.79%	26.09%	40.48%	-32.48%	28.29%	36.64%	36.44%	5.18%	31.29%
WBSIX William Blair Small Cap Growth Fund	15.71%	3.03%	32.88%	16.38%	-21.46%	12.64%	38.87%	22.53%	-2.08%	26.81%

Correlation

The correlation between LCGFX and WBSIX is 0.62, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.62
Correlation (3Y) Calculated over the trailing 3-year period	0.66
Correlation (5Y) Calculated over the trailing 5-year period	0.75
Correlation (10Y) Calculated over the trailing 10-year period	0.75
Correlation (All Time) Calculated using the full available price history since Dec 29, 1999	0.79

The correlation between LCGFX and WBSIX shifts across timeframes, from 0.62 (1 year) to 0.79 (all time), reflecting how their relationship changes across market environments.

Return for Risk

LCGFX vs. WBSIX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

LCGFX

LCGFX Risk / Return Rank: 12
LCGFX Sharpe Ratio Rank: 15
LCGFX Sortino Ratio Rank: 14
LCGFX Omega Ratio Rank: 15
LCGFX Calmar Ratio Rank: 9
LCGFX Martin Ratio Rank: 8

WBSIX

WBSIX Risk / Return Rank: 34
WBSIX Sharpe Ratio Rank: 30
WBSIX Sortino Ratio Rank: 30
WBSIX Omega Ratio Rank: 26
WBSIX Calmar Ratio Rank: 42
WBSIX Martin Ratio Rank: 42

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.

LCGFX vs. WBSIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for William Blair Large Cap Growth Fund (LCGFX) and William Blair Small Cap Growth Fund (WBSIX). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

	LCGFX	WBSIX	Difference
Sharpe ratio: Return per unit of total volatility	1.08	1.55	-0.48
Sortino ratio: Return per unit of downside risk	1.52	2.26	-0.75
Omega ratio: Gain probability vs. loss probability	1.19	1.26	-0.07
Calmar ratio: Return relative to maximum drawdown	0.81	2.43	-1.62
Martin ratio: Return relative to average drawdown	2.26	8.79	-6.53
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

LCGFX vs. WBSIX - Sharpe Ratio Comparison

The current LCGFX Sharpe Ratio is 1.08, which is lower than the WBSIX Sharpe Ratio of 1.55. The chart below compares the historical Sharpe Ratios of LCGFX and WBSIX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	LCGFX	WBSIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.08	1.55	-0.48
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.48	0.34	+0.14
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.78	0.64	+0.14
Sharpe Ratio (All Time) Calculated using the full available price history	0.35	0.54	-0.20

Drawdowns

LCGFX vs. WBSIX - Drawdown Comparison

The maximum LCGFX drawdown since its inception was -62.95%, roughly equal to the maximum WBSIX drawdown of -62.35%. Use the drawdown chart below to compare losses from any high point for LCGFX and WBSIX.

Drawdown Indicators

	LCGFX	WBSIX	Difference
Max Drawdown Largest peak-to-trough decline	-62.95%	-62.35%	-0.60%
Max Drawdown (1Y) Largest decline over 1 year	-20.59%	-12.75%	-7.84%
Max Drawdown (3Y) Largest decline over 3 years	-23.83%	-24.76%	+0.93%
Max Drawdown (5Y) Largest decline over 5 years	-37.25%	-38.13%	+0.88%
Max Drawdown (10Y) Largest decline over 10 years	-37.25%	-39.16%	+1.91%
Current Drawdown Current decline from peak	-2.15%	-0.43%	-1.72%
Average Drawdown Average peak-to-trough decline	-21.48%	-11.13%	-10.35%
Ulcer Index Depth and duration of drawdowns from previous peaks	7.34%	3.51%	+3.83%

Volatility

LCGFX vs. WBSIX - Volatility Comparison

The current volatility for William Blair Large Cap Growth Fund (LCGFX) is 3.91%, while William Blair Small Cap Growth Fund (WBSIX) has a volatility of 5.61%. This indicates that LCGFX experiences smaller price fluctuations and is considered to be less risky than WBSIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	LCGFX	WBSIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.91%	5.61%	-1.70%
Volatility (6M) Calculated over the trailing 6-month period	11.75%	14.48%	-2.73%
Volatility (1Y) Calculated over the trailing 1-year period	15.47%	20.00%	-4.53%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.77%	23.85%	-2.08%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.29%	23.02%	-1.73%

LCGFX vs. WBSIX - Expense Ratio Comparison

LCGFX has a 0.65% expense ratio, which is lower than WBSIX's 1.25% expense ratio.

Dividends

LCGFX vs. WBSIX - Dividend Comparison

LCGFX's dividend yield for the trailing twelve months is around 8.21%, more than WBSIX's 6.47% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
LCGFX William Blair Large Cap Growth Fund	8.21%	8.56%	5.97%	0.00%	0.82%	4.29%	3.83%	6.46%	17.08%	0.56%	1.10%	9.86%
WBSIX William Blair Small Cap Growth Fund	6.47%	7.49%	20.14%	1.53%	3.55%	17.85%	9.73%	2.07%	12.60%	16.89%	5.42%	8.25%

Frequently Asked Questions

Can I hold both LCGFX and WBSIX in my portfolio?

LCGFX and WBSIX have a correlation of 0.62, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, LCGFX or WBSIX?

WBSIX has higher volatility (5.61%) compared to LCGFX (3.91%). In terms of maximum drawdown, LCGFX dropped -62.95% vs WBSIX's -62.35%.

Which has better risk-adjusted returns?

WBSIX currently has the higher Sharpe Ratio (1.55 vs 1.08), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.