UFOX vs. EWY

Last updated Jun 13, 2026

UFOX (Defiance Connective Technologies ETF) and EWY (iShares MSCI South Korea ETF) are both exchange-traded funds - UFOX is a Technology Equities fund tracking the BlueStar Connective Technologies Index, while EWY is a Asia Pacific Equities fund tracking the MSCI Korea Index. Both are passively managed. Over the past 5 years, UFOX returned 21.65%/yr vs 18.80%/yr for EWY. A 0.62 correlation means they provide meaningful diversification when combined. UFOX charges 0.30%/yr vs 0.59%/yr for EWY.

Performance

UFOX vs. EWY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Defiance Connective Technologies ETF (UFOX) and iShares MSCI South Korea ETF (EWY). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, UFOX achieves a 48.96% return, which is significantly lower than EWY's 103.10% return.

UFOX

• 1D: -1.41%
• 1M: 2.33%
• YTD: 48.96%
• 6M: 46.16%
• 1Y: 93.99%
• 3Y*: 42.93%
• 5Y*: 21.65%
• 10Y*: —

EWY

• 1D: -0.75%
• 1M: 4.68%
• YTD: 103.10%
• 6M: 117.85%
• 1Y: 198.25%
• 3Y*: 46.46%
• 5Y*: 18.80%
• 10Y*: 16.84%

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

UFOX vs. EWY - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
UFOX Defiance Connective Technologies ETF	48.96%	34.83%	34.11%	21.83%	-27.26%	25.68%	29.78%	5.58%
EWY iShares MSCI South Korea ETF	103.10%	95.33%	-20.48%	19.05%	-26.59%	-7.58%	39.43%	1.60%

Correlation

The correlation between UFOX and EWY is 0.59, 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	0.59
Correlation (3Y) Calculated over the trailing 3-year period	0.59
Correlation (5Y) Calculated over the trailing 5-year period	0.61
Correlation (All Time) Calculated using the full available price history since Mar 5, 2019	0.62

The correlation between UFOX and EWY has been stable across timeframes, ranging from 0.59 to 0.62 - a consistent structural relationship.

UFOX vs. EWY - Sectors Allocation Comparison

Sectors	UFOX	EWY
Technology	77.8%	52.4%
Industrials	13.9%	20.4%
Communication Services	5.0%	2.9%
Real Estate	3.2%	-
Basic Materials	-	2.0%
Consumer Cyclical	-	5.7%
Consumer Defensive	-	1.7%
Energy	-	1.4%
Financial Services	-	9.6%
Healthcare	-	3.5%
Utilities	-	0.4%

Return for Risk

UFOX vs. EWY — Risk / Return Rank

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

UFOX

UFOX Risk / Return Rank: 94
UFOX Sharpe Ratio Rank: 95
UFOX Sortino Ratio Rank: 92
UFOX Omega Ratio Rank: 91
UFOX Calmar Ratio Rank: 95
UFOX Martin Ratio Rank: 96

EWY

EWY Risk / Return Rank: 95
EWY Sharpe Ratio Rank: 97
EWY Sortino Ratio Rank: 93
EWY Omega Ratio Rank: 94
EWY Calmar Ratio Rank: 97
EWY Martin Ratio Rank: 96

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.

UFOX vs. EWY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Defiance Connective Technologies ETF (UFOX) and iShares MSCI South Korea ETF (EWY). 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.

	UFOX	EWY	Difference
Sharpe ratio: Return per unit of total volatility	3.40	4.29	-0.89
Sortino ratio: Return per unit of downside risk	3.94	4.08	-0.14
Omega ratio: Gain probability vs. loss probability	1.53	1.59	-0.06
Calmar ratio: Return relative to maximum drawdown	6.68	8.65	-1.96
Martin ratio: Return relative to average drawdown	28.71	30.24	-1.53

UFOX vs. EWY - Sharpe Ratio Comparison

The current UFOX Sharpe Ratio is 3.40, which is comparable to the EWY Sharpe Ratio of 4.29. The chart below compares the historical Sharpe Ratios of UFOX and EWY, 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

UFOX vs. EWY - Drawdown Comparison

The maximum UFOX drawdown since its inception was -33.90%, smaller than the maximum EWY drawdown of -74.14%. Use the drawdown chart below to compare losses from any high point for UFOX and EWY.

Drawdown Indicators

	UFOX	EWY	Difference
Max Drawdown Largest peak-to-trough decline	-33.90%	-74.14%	+40.24%
Max Drawdown (1Y) Largest decline over 1 year	-14.14%	-23.08%	+8.94%
Max Drawdown (3Y) Largest decline over 3 years	-28.14%	-27.36%	-0.78%
Max Drawdown (5Y) Largest decline over 5 years	-33.90%	-48.55%	+14.65%
Max Drawdown (10Y) Largest decline over 10 years	—	-49.73%	—
Current Drawdown Current decline from peak	-10.69%	-8.88%	-1.81%
Average Drawdown Average peak-to-trough decline	-9.02%	-20.11%	+11.09%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.29%	6.59%	-3.30%

Volatility

UFOX vs. EWY - Volatility Comparison

The current volatility for Defiance Connective Technologies ETF (UFOX) is 13.40%, while iShares MSCI South Korea ETF (EWY) has a volatility of 25.64%. This indicates that UFOX experiences smaller price fluctuations and is considered to be less risky than EWY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	UFOX	EWY	Difference
Volatility (1M) Calculated over the trailing 1-month period	13.40%	25.64%	-12.24%
Volatility (6M) Calculated over the trailing 6-month period	23.05%	42.65%	-19.60%
Volatility (1Y) Calculated over the trailing 1-year period	27.78%	46.51%	-18.73%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	25.05%	30.15%	-5.10%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	25.48%	28.06%	-2.58%

UFOX vs. EWY - Expense Ratio Comparison

UFOX has a 0.30% expense ratio, which is lower than EWY's 0.59% expense ratio.

Dividends

UFOX vs. EWY - Dividend Comparison

UFOX's dividend yield for the trailing twelve months is around 0.39%, less than EWY's 1.03% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
EWY iShares MSCI South Korea ETF	1.03%	2.10%	2.55%	2.52%	1.23%	2.16%	0.73%	2.10%	1.34%	2.90%	1.21%	2.42%
UFOX Defiance Connective Technologies ETF	0.39%	0.56%	0.79%	1.40%	1.63%	1.17%	0.99%	0.75%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both UFOX and EWY in my portfolio?

UFOX and EWY have a correlation of 0.59, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, UFOX or EWY?

EWY has higher volatility (25.64%) compared to UFOX (13.40%). In terms of maximum drawdown, UFOX dropped -33.90% vs EWY's -74.14%.

Which ETF is better, UFOX or EWY?

On 5-year performance, UFOX leads with 21.65% vs 18.80% for EWY. On fees, UFOX is cheaper at 0.30% per year. On volatility, UFOX has been the lower-risk option at 13.40%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, UFOX or EWY?

Over the 5-year period, UFOX has performed better with a 21.65% return vs 18.80%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, UFOX or EWY?

UFOX is cheaper with a 0.30% expense ratio, compared with 0.59% for EWY.

Which ETF pays a higher dividend yield, UFOX or EWY?

EWY has the higher dividend yield at 1.03%, compared with 0.39% for UFOX.

What is the main difference between UFOX and EWY?

UFOX is categorized as Technology Equities, while EWY is Asia Pacific Equities. UFOX tracks BlueStar Connective Technologies Index, while EWY tracks MSCI Korea Index. They also come from different issuers: Defiance and iShares. Their fees differ too: 0.30% for UFOX and 0.59% for EWY.

Which has better risk-adjusted returns?

EWY currently has the higher Sharpe Ratio (4.29 vs 3.40), 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.