ETMGX vs. WBSIX

Last updated Jun 5, 2026

ETMGX (Eaton Vance Tax-Managed Small-Cap Fund) and WBSIX (William Blair Small Cap Growth Fund) are both Small Cap Growth Equities funds. Over the past 10 years, ETMGX returned 7.56%/yr vs 14.76%/yr for WBSIX. Their correlation of 0.89 suggests significant overlap in exposure. ETMGX charges 1.11%/yr vs 1.25%/yr for WBSIX.

Performance

ETMGX vs. WBSIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Eaton Vance Tax-Managed Small-Cap Fund (ETMGX) 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, ETMGX achieves a 1.62% return, which is significantly lower than WBSIX's 15.71% return. Over the past 10 years, ETMGX has underperformed WBSIX with an annualized return of 7.56%, while WBSIX has yielded a comparatively higher 14.76% annualized return.

ETMGX

• 1D: -0.42%
• 1M: -1.63%
• YTD: 1.62%
• 6M: 0.06%
• 1Y: -1.73%
• 3Y*: 3.48%
• 5Y*: 0.82%
• 10Y*: 7.56%

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)

ETMGX vs. WBSIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ETMGX Eaton Vance Tax-Managed Small-Cap Fund	1.62%	-6.63%	11.43%	11.06%	-16.53%	20.91%	12.33%	27.32%	-5.86%	15.26%
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 ETMGX and WBSIX is 0.80, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.80
Correlation (3Y) Calculated over the trailing 3-year period	0.84
Correlation (5Y) Calculated over the trailing 5-year period	0.87
Correlation (10Y) Calculated over the trailing 10-year period	0.88
Correlation (All Time) Calculated using the full available price history since Aug 6, 2012	0.89

The correlation between ETMGX and WBSIX has been stable across timeframes, ranging from 0.80 to 0.89 - a consistent structural relationship.

Return for Risk

ETMGX vs. WBSIX — Risk / Return Rank

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

ETMGX

ETMGX Risk / Return Rank: 2
ETMGX Sharpe Ratio Rank: 2
ETMGX Sortino Ratio Rank: 2
ETMGX Omega Ratio Rank: 2
ETMGX Calmar Ratio Rank: 2
ETMGX Martin Ratio Rank: 2

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.

ETMGX vs. WBSIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Eaton Vance Tax-Managed Small-Cap Fund (ETMGX) 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.

	ETMGX	WBSIX	Difference
Sharpe ratio: Return per unit of total volatility	-0.13	1.55	-1.69
Sortino ratio: Return per unit of downside risk	-0.08	2.26	-2.35
Omega ratio: Gain probability vs. loss probability	0.99	1.26	-0.27
Calmar ratio: Return relative to maximum drawdown	-0.16	2.43	-2.59
Martin ratio: Return relative to average drawdown	-0.36	8.79	-9.15
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ETMGX vs. WBSIX - Sharpe Ratio Comparison

The current ETMGX Sharpe Ratio is -0.13, which is lower than the WBSIX Sharpe Ratio of 1.55. The chart below compares the historical Sharpe Ratios of ETMGX 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

	ETMGX	WBSIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.13	1.55	-1.69
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.04	0.34	-0.30
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.38	0.64	-0.26
Sharpe Ratio (All Time) Calculated using the full available price history	0.47	0.54	-0.07

Drawdowns

ETMGX vs. WBSIX - Drawdown Comparison

The maximum ETMGX drawdown since its inception was -37.02%, smaller than the maximum WBSIX drawdown of -62.35%. Use the drawdown chart below to compare losses from any high point for ETMGX and WBSIX.

Drawdown Indicators

	ETMGX	WBSIX	Difference
Max Drawdown Largest peak-to-trough decline	-37.02%	-62.35%	+25.33%
Max Drawdown (1Y) Largest decline over 1 year	-13.14%	-12.75%	-0.39%
Max Drawdown (3Y) Largest decline over 3 years	-22.28%	-24.76%	+2.48%
Max Drawdown (5Y) Largest decline over 5 years	-25.14%	-38.13%	+12.99%
Max Drawdown (10Y) Largest decline over 10 years	-37.02%	-39.16%	+2.14%
Current Drawdown Current decline from peak	-12.90%	-0.43%	-12.47%
Average Drawdown Average peak-to-trough decline	-6.58%	-11.13%	+4.55%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.85%	3.51%	+2.34%

Volatility

ETMGX vs. WBSIX - Volatility Comparison

The current volatility for Eaton Vance Tax-Managed Small-Cap Fund (ETMGX) is 4.45%, while William Blair Small Cap Growth Fund (WBSIX) has a volatility of 5.61%. This indicates that ETMGX 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

	ETMGX	WBSIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.45%	5.61%	-1.16%
Volatility (6M) Calculated over the trailing 6-month period	11.19%	14.48%	-3.29%
Volatility (1Y) Calculated over the trailing 1-year period	16.08%	20.00%	-3.92%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.75%	23.85%	-5.10%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.92%	23.02%	-3.10%

ETMGX vs. WBSIX - Expense Ratio Comparison

ETMGX has a 1.11% expense ratio, which is lower than WBSIX's 1.25% expense ratio.

Dividends

ETMGX vs. WBSIX - Dividend Comparison

ETMGX's dividend yield for the trailing twelve months is around 6.93%, more than WBSIX's 6.47% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ETMGX Eaton Vance Tax-Managed Small-Cap Fund	6.93%	7.04%	2.85%	1.36%	2.80%	8.28%	0.09%	6.50%	7.75%	11.87%	6.00%	5.50%
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 ETMGX and WBSIX in my portfolio?

ETMGX and WBSIX have a correlation of 0.80, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ETMGX or WBSIX?

WBSIX has higher volatility (5.61%) compared to ETMGX (4.45%). In terms of maximum drawdown, ETMGX dropped -37.02% vs WBSIX's -62.35%.

Which has better risk-adjusted returns?

WBSIX currently has the higher Sharpe Ratio (1.55 vs -0.13), 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.