RWEM vs. EMOP

Last updated Jul 17, 2026

RWEM (Rayliant Wilshire NxtGen Emerging Markets Equity ETF) and EMOP (AB Emerging Markets Opportunities ETF) are both Emerging Markets Equities funds. RWEM is passively managed, while EMOP is actively managed. Over the past year, RWEM returned 36.22% vs 36.54% for EMOP. At a 0.50 correlation, their price movements are largely independent. RWEM charges 0.52%/yr vs 0.70%/yr for EMOP.

Performance

RWEM vs. EMOP - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Rayliant Wilshire NxtGen Emerging Markets Equity ETF (RWEM) and AB Emerging Markets Opportunities ETF (EMOP). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RWEM achieves a 19.17% return, which is significantly lower than EMOP's 21.55% return.

RWEM

• 1D: 1.01%
• 1M: -4.36%
• 6M: 15.15%
• YTD: 19.17%
• 1Y: 36.22%
• 3Y*: 19.89%
• 5Y*: —
• 10Y*: —

EMOP

• 1D: -2.41%
• 1M: -6.04%
• 6M: 13.94%
• YTD: 21.55%
• 1Y: 36.54%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

RWEM vs. EMOP - Yearly Performance Comparison

	2026 (YTD)	2025
RWEM Rayliant Wilshire NxtGen Emerging Markets Equity ETF	19.17%	19.84%
EMOP AB Emerging Markets Opportunities ETF	21.55%	16.48%

Correlation

The correlation between RWEM and EMOP is 0.50, 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	0.50
Correlation (All Time) Calculated using the full available price history since Jun 18, 2025	0.50

The correlation between RWEM and EMOP has been stable across timeframes, ranging from 0.50 to 0.50 - a consistent structural relationship.

RWEM vs. EMOP - Sectors Allocation Comparison

Sectors	RWEM	EMOP
Technology	43.8%	45.9%
Financial Services	15.3%	15.4%
Industrials	5.9%	6.0%
Consumer Cyclical	4.5%	8.5%
Communication Services	4.4%	3.0%
Basic Materials	3.5%	2.3%
Energy	2.4%	7.9%
Healthcare	1.9%	3.5%
Utilities	1.9%	2.8%
Consumer Defensive	1.0%	5.0%
Real Estate	0.1%	2.4%

Return for Risk

RWEM vs. EMOP — Risk / Return Rank

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

RWEM

RWEM Risk / Return Rank: 43
RWEM Sharpe Ratio Rank: 34
RWEM Sortino Ratio Rank: 35
RWEM Omega Ratio Rank: 38
RWEM Calmar Ratio Rank: 59
RWEM Martin Ratio Rank: 51

EMOP

EMOP Risk / Return Rank: 64
EMOP Sharpe Ratio Rank: 61
EMOP Sortino Ratio Rank: 55
EMOP Omega Ratio Rank: 63
EMOP Calmar Ratio Rank: 71
EMOP Martin Ratio Rank: 69

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.

RWEM vs. EMOP - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Rayliant Wilshire NxtGen Emerging Markets Equity ETF (RWEM) and AB Emerging Markets Opportunities ETF (EMOP). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	RWEM	EMOP	Difference
Sharpe ratio: Return per unit of total volatility	1.01	1.64	-0.62
Sortino ratio: Return per unit of downside risk	1.53	2.17	-0.63
Omega ratio: Gain probability vs. loss probability	1.21	1.31	-0.10
Calmar ratio: Return relative to maximum drawdown	2.36	2.85	-0.49
Martin ratio: Return relative to average drawdown	6.75	9.86	-3.11

RWEM vs. EMOP - Sharpe Ratio Comparison

The current RWEM Sharpe Ratio is 1.01, which is lower than the EMOP Sharpe Ratio of 1.64. The chart below compares the historical Sharpe Ratios of RWEM and EMOP, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

RWEM vs. EMOP - Drawdown Comparison

The maximum RWEM drawdown since its inception was -26.92%, which is greater than EMOP's maximum drawdown of -12.88%. Use the drawdown chart below to compare losses from any high point for RWEM and EMOP.

Drawdown Indicators

	RWEM	EMOP	Difference
Max Drawdown Largest peak-to-trough decline	-26.92%	-12.88%	-14.04%
Max Drawdown (1Y) Largest decline over 1 year	-15.39%	-12.88%	-2.51%
Max Drawdown (3Y) Largest decline over 3 years	-22.56%	—	—
Current Drawdown Current decline from peak	-7.97%	-9.02%	+1.05%
Average Drawdown Average peak-to-trough decline	-9.56%	-2.20%	-7.36%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.38%	3.71%	+1.67%

Volatility

RWEM vs. EMOP - Volatility Comparison

Rayliant Wilshire NxtGen Emerging Markets Equity ETF (RWEM) has a higher volatility of 10.62% compared to AB Emerging Markets Opportunities ETF (EMOP) at 9.06%. This indicates that RWEM's price experiences larger fluctuations and is considered to be riskier than EMOP based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RWEM	EMOP	Difference
Volatility (1M) Calculated over the trailing 1-month period	10.62%	9.06%	+1.56%
Volatility (6M) Calculated over the trailing 6-month period	30.07%	20.38%	+9.69%
Volatility (1Y) Calculated over the trailing 1-year period	35.98%	22.44%	+13.54%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.55%	21.94%	+0.61%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.55%	21.94%	+0.61%

RWEM vs. EMOP - Expense Ratio Comparison

RWEM has a 0.52% expense ratio, which is lower than EMOP's 0.70% expense ratio.

Dividends

RWEM vs. EMOP - Dividend Comparison

RWEM's dividend yield for the trailing twelve months is around 1.81%, more than EMOP's 1.22% yield.

Position	TTM	2025	2024	2023	2022	2021
EMOP AB Emerging Markets Opportunities ETF	1.22%	0.27%	0.00%	0.00%	0.00%	0.00%
RWEM Rayliant Wilshire NxtGen Emerging Markets Equity ETF	1.81%	2.15%	3.59%	1.60%	5.59%	0.39%

Frequently Asked Questions

Can I hold both RWEM and EMOP in my portfolio?

RWEM and EMOP have a correlation of 0.50, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RWEM or EMOP?

RWEM has higher volatility (10.62%) compared to EMOP (9.06%). In terms of maximum drawdown, RWEM dropped -26.92% vs EMOP's -12.88%.

Which ETF is better, RWEM or EMOP?

On 1-year performance, EMOP leads with 36.54% vs 36.22% for RWEM. On fees, RWEM is cheaper at 0.52% per year. On volatility, EMOP has been the lower-risk option at 9.06%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, RWEM or EMOP?

Over the 1-year period, EMOP has performed better with a 36.54% return vs 36.22%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, RWEM or EMOP?

RWEM is cheaper with a 0.52% expense ratio, compared with 0.70% for EMOP.

Which ETF pays a higher dividend yield, RWEM or EMOP?

RWEM has the higher dividend yield at 1.81%, compared with 1.22% for EMOP.

What is the main difference between RWEM and EMOP?

They also come from different issuers: Rayliant and AllianceBernstein. Their fees differ too: 0.52% for RWEM and 0.70% for EMOP.

Which has better risk-adjusted returns?

EMOP currently has the higher Sharpe Ratio (1.64 vs 1.01), 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.