EMPTX vs. BESIX

Last updated Jun 4, 2026

EMPTX (UBS Emerging Markets Equity Opportunity Fund) and BESIX (William Blair Emerging Markets Small Cap Growth Fund) are both Emerging Markets Diversified funds. Over the past 5 years, EMPTX returned 6.59%/yr vs 6.74%/yr for BESIX. A 0.63 correlation means they provide meaningful diversification when combined. EMPTX charges 0.19%/yr vs 1.30%/yr for BESIX.

Performance

EMPTX vs. BESIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in UBS Emerging Markets Equity Opportunity Fund (EMPTX) and William Blair Emerging Markets Small Cap Growth Fund (BESIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, EMPTX achieves a 30.51% return, which is significantly higher than BESIX's 21.68% return.

EMPTX

• 1D: 1.55%
• 1M: 10.37%
• YTD: 30.51%
• 6M: 34.39%
• 1Y: 68.31%
• 3Y*: 26.97%
• 5Y*: 6.59%
• 10Y*: —

BESIX

• 1D: -0.91%
• 1M: -0.91%
• YTD: 21.68%
• 6M: 23.80%
• 1Y: 42.72%
• 3Y*: 19.31%
• 5Y*: 6.74%
• 10Y*: 9.77%

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

EMPTX vs. BESIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
EMPTX UBS Emerging Markets Equity Opportunity Fund	30.51%	43.82%	2.51%	8.92%	-25.38%	-9.36%	24.79%	14.98%	0.55%
BESIX William Blair Emerging Markets Small Cap Growth Fund	21.68%	13.93%	8.37%	22.25%	-27.95%	15.52%	32.60%	20.58%	-21.57%

Correlation

The correlation between EMPTX and BESIX is 0.64, 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	0.64
Correlation (3Y) Calculated over the trailing 3-year period	0.57
Correlation (5Y) Calculated over the trailing 5-year period	0.62
Correlation (All Time) Calculated using the full available price history since Jun 5, 2018	0.63

The correlation between EMPTX and BESIX has been stable across timeframes, ranging from 0.57 to 0.64 - a consistent structural relationship.

Return for Risk

EMPTX vs. BESIX — Risk / Return Rank

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

EMPTX

EMPTX Risk / Return Rank: 94
EMPTX Sharpe Ratio Rank: 98
EMPTX Sortino Ratio Rank: 94
EMPTX Omega Ratio Rank: 93
EMPTX Calmar Ratio Rank: 93
EMPTX Martin Ratio Rank: 93

BESIX

BESIX Risk / Return Rank: 67
BESIX Sharpe Ratio Rank: 70
BESIX Sortino Ratio Rank: 60
BESIX Omega Ratio Rank: 62
BESIX Calmar Ratio Rank: 82
BESIX Martin Ratio Rank: 64

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.

EMPTX vs. BESIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for UBS Emerging Markets Equity Opportunity Fund (EMPTX) and William Blair Emerging Markets Small Cap Growth Fund (BESIX). 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.

	EMPTX	BESIX	Difference
Sharpe ratio: Return per unit of total volatility	4.00	2.44	+1.56
Sortino ratio: Return per unit of downside risk	4.80	3.26	+1.54
Omega ratio: Gain probability vs. loss probability	1.71	1.44	+0.28
Calmar ratio: Return relative to maximum drawdown	5.17	3.81	+1.36
Martin ratio: Return relative to average drawdown	20.43	12.63	+7.81
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

EMPTX vs. BESIX - Sharpe Ratio Comparison

The current EMPTX Sharpe Ratio is 4.00, which is higher than the BESIX Sharpe Ratio of 2.44. The chart below compares the historical Sharpe Ratios of EMPTX and BESIX, 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

	EMPTX	BESIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	4.00	2.44	+1.56
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.35	0.45	-0.10
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.60	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.49	0.67	-0.18

Drawdowns

EMPTX vs. BESIX - Drawdown Comparison

The maximum EMPTX drawdown since its inception was -46.03%, which is greater than BESIX's maximum drawdown of -38.05%. Use the drawdown chart below to compare losses from any high point for EMPTX and BESIX.

Drawdown Indicators

	EMPTX	BESIX	Difference
Max Drawdown Largest peak-to-trough decline	-46.03%	-38.05%	-7.98%
Max Drawdown (1Y) Largest decline over 1 year	-14.50%	-11.45%	-3.05%
Max Drawdown (3Y) Largest decline over 3 years	-15.50%	-21.34%	+5.84%
Max Drawdown (5Y) Largest decline over 5 years	-41.46%	-31.41%	-10.05%
Max Drawdown (10Y) Largest decline over 10 years	—	-38.05%	—
Current Drawdown Current decline from peak	0.00%	-2.81%	+2.81%
Average Drawdown Average peak-to-trough decline	-18.37%	-10.19%	-8.18%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.54%	3.44%	+0.10%

Volatility

EMPTX vs. BESIX - Volatility Comparison

UBS Emerging Markets Equity Opportunity Fund (EMPTX) has a higher volatility of 7.75% compared to William Blair Emerging Markets Small Cap Growth Fund (BESIX) at 6.35%. This indicates that EMPTX's price experiences larger fluctuations and is considered to be riskier than BESIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	EMPTX	BESIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.75%	6.35%	+1.40%
Volatility (6M) Calculated over the trailing 6-month period	16.12%	14.89%	+1.23%
Volatility (1Y) Calculated over the trailing 1-year period	18.72%	17.88%	+0.84%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.28%	15.03%	+4.25%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.37%	16.25%	+3.12%

EMPTX vs. BESIX - Expense Ratio Comparison

EMPTX has a 0.19% expense ratio, which is lower than BESIX's 1.30% expense ratio.

Dividends

EMPTX vs. BESIX - Dividend Comparison

EMPTX's dividend yield for the trailing twelve months is around 1.47%, less than BESIX's 7.84% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BESIX William Blair Emerging Markets Small Cap Growth Fund	7.84%	9.53%	0.00%	0.26%	4.84%	8.51%	0.04%	0.16%	2.32%	3.17%	2.67%	4.17%
EMPTX UBS Emerging Markets Equity Opportunity Fund	1.47%	1.91%	3.40%	3.20%	3.84%	11.93%	1.50%	2.75%	0.54%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both EMPTX and BESIX in my portfolio?

EMPTX and BESIX have a correlation of 0.64, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, EMPTX or BESIX?

EMPTX has higher volatility (7.75%) compared to BESIX (6.35%). In terms of maximum drawdown, EMPTX dropped -46.03% vs BESIX's -38.05%.

Which has better risk-adjusted returns?

EMPTX currently has the higher Sharpe Ratio (4.00 vs 2.44), 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.