TWMIX vs. EMPTX

Last updated Apr 1, 2026

Compare and contrast key facts about American Century Emerging Markets Fund (TWMIX) and UBS Emerging Markets Equity Opportunity Fund (EMPTX).

TWMIX is managed by American Century. It was launched on Sep 29, 1997. EMPTX is managed by UBS. It was launched on May 30, 2018.

Performance

TWMIX vs. EMPTX - Performance Comparison

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

TWMIX vs. EMPTX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
TWMIX American Century Emerging Markets Fund	1.55%	35.27%	11.44%	5.43%	-28.14%	-6.04%	25.13%	21.94%	-18.79%
EMPTX UBS Emerging Markets Equity Opportunity Fund	-0.19%	43.82%	2.51%	8.92%	-25.38%	-9.36%	24.79%	14.98%	0.55%

Returns By Period

In the year-to-date period, TWMIX achieves a 1.55% return, which is significantly higher than EMPTX's -0.19% return.

TWMIX

• 1D: -0.86%
• 1M: -12.28%
• YTD: 1.55%
• 6M: 7.45%
• 1Y: 36.38%
• 3Y*: 16.34%
• 5Y*: 1.62%
• 10Y*: 7.42%

EMPTX

• 1D: -0.94%
• 1M: -14.50%
• YTD: -0.19%
• 6M: 5.92%
• 1Y: 34.87%
• 3Y*: 15.95%
• 5Y*: 1.51%
• 10Y*: —

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

TWMIX vs. EMPTX - Expense Ratio Comparison

TWMIX has a 1.26% expense ratio, which is higher than EMPTX's 0.19% expense ratio.

TWMIX

American Century Emerging Markets Fund

EMPTX

UBS Emerging Markets Equity Opportunity Fund

Return for Risk

TWMIX vs. EMPTX — Risk / Return Rank

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

TWMIX

TWMIX Risk / Return Rank: 89
TWMIX Sharpe Ratio Rank: 90
TWMIX Sortino Ratio Rank: 87
TWMIX Omega Ratio Rank: 86
TWMIX Calmar Ratio Rank: 90
TWMIX Martin Ratio Rank: 90

EMPTX

EMPTX Risk / Return Rank: 89
EMPTX Sharpe Ratio Rank: 91
EMPTX Sortino Ratio Rank: 88
EMPTX Omega Ratio Rank: 87
EMPTX Calmar Ratio Rank: 89
EMPTX Martin Ratio Rank: 88

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.

TWMIX vs. EMPTX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Century Emerging Markets Fund (TWMIX) and UBS Emerging Markets Equity Opportunity Fund (EMPTX). 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.

	TWMIX	EMPTX	Difference
Sharpe ratio Return per unit of total volatility	1.87	1.91	-0.04
Sortino ratio Return per unit of downside risk	2.39	2.44	-0.05
Omega ratio Gain probability vs. loss probability	1.36	1.37	-0.01
Calmar ratio Return relative to maximum drawdown	2.50	2.43	+0.07
Martin ratio Return relative to average drawdown	10.02	9.59	+0.43
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

TWMIX vs. EMPTX - Sharpe Ratio Comparison

The current TWMIX Sharpe Ratio is 1.87, which is comparable to the EMPTX Sharpe Ratio of 1.91. The chart below compares the historical Sharpe Ratios of TWMIX and EMPTX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	TWMIX	EMPTX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.87	1.91	-0.04
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.09	0.08	+0.01
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.39	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.31	0.31	0.00

Correlation

The correlation between TWMIX and EMPTX is 0.78, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

TWMIX vs. EMPTX - Dividend Comparison

TWMIX's dividend yield for the trailing twelve months is around 1.13%, less than EMPTX's 1.92% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
TWMIX American Century Emerging Markets Fund	1.13%	1.14%	0.71%	1.30%	3.37%	0.58%	0.97%	0.48%	0.92%	0.24%	0.12%	0.08%
EMPTX UBS Emerging Markets Equity Opportunity Fund	1.92%	1.91%	3.40%	3.20%	3.84%	11.93%	1.50%	2.75%	0.54%	0.00%	0.00%	0.00%

Drawdowns

TWMIX vs. EMPTX - Drawdown Comparison

The maximum TWMIX drawdown since its inception was -68.57%, which is greater than EMPTX's maximum drawdown of -46.03%. Use the drawdown chart below to compare losses from any high point for TWMIX and EMPTX.

Drawdown Indicators

	TWMIX	EMPTX	Difference
Max Drawdown Largest peak-to-trough decline	-68.57%	-46.03%	-22.54%
Max Drawdown (1Y) Largest decline over 1 year	-13.29%	-14.50%	+1.21%
Max Drawdown (5Y) Largest decline over 5 years	-43.64%	-41.73%	-1.91%
Max Drawdown (10Y) Largest decline over 10 years	-47.51%	—	—
Current Drawdown Current decline from peak	-13.29%	-14.50%	+1.21%
Average Drawdown Average peak-to-trough decline	-24.59%	-18.72%	-5.87%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.32%	3.87%	-0.55%

Volatility

TWMIX vs. EMPTX - Volatility Comparison

American Century Emerging Markets Fund (TWMIX) has a higher volatility of 10.03% compared to UBS Emerging Markets Equity Opportunity Fund (EMPTX) at 8.90%. This indicates that TWMIX's price experiences larger fluctuations and is considered to be riskier than EMPTX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	TWMIX	EMPTX	Difference
Volatility (1M) Calculated over the trailing 1-month period	10.03%	8.90%	+1.13%
Volatility (6M) Calculated over the trailing 6-month period	15.06%	13.64%	+1.42%
Volatility (1Y) Calculated over the trailing 1-year period	19.22%	18.77%	+0.45%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.84%	18.85%	-1.01%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.87%	19.21%	-0.34%