GREK vs. IYZ
GREK (Global X MSCI Greece ETF) and IYZ (iShares U.S. Telecommunications ETF) are both exchange-traded funds - GREK is a Emerging Markets Equities fund tracking the MSCI All Greece Select 25-50, while IYZ is a Communications Equities fund tracking the Dow Jones U.S. Select Telecommunications Index. Both are passively managed. Over the past 10 years, GREK returned 16.17%/yr vs 4.05%/yr for IYZ. At a 0.37 correlation, their price movements are largely independent. GREK charges 0.58%/yr vs 0.42%/yr for IYZ.
Performance
GREK vs. IYZ - Performance Comparison
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Returns By Period
In the year-to-date period, GREK achieves a 14.15% return, which is significantly lower than IYZ's 18.92% return. Over the past 10 years, GREK has outperformed IYZ with an annualized return of 16.17%, while IYZ has yielded a comparatively lower 4.05% annualized return.
GREK
- 1D
- 0.11%
- 1M
- -2.53%
- 6M
- 7.43%
- YTD
- 14.15%
- 1Y
- 25.52%
- 3Y*
- 27.97%
- 5Y*
- 27.03%
- 10Y*
- 16.17%
- ALL TIME*
- 5.76%
IYZ
- 1D
- -0.22%
- 1M
- -3.80%
- 6M
- 19.38%
- YTD
- 18.92%
- 1Y
- 36.49%
- 3Y*
- 24.26%
- 5Y*
- 6.03%
- 10Y*
- 4.05%
- ALL TIME*
- 1.23%
GREK vs. IYZ - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
GREK Global X MSCI Greece ETF | 14.15% | 76.11% | 9.53% | 42.72% | 3.64% | 6.14% | -13.89% | 50.20% | -31.25% | 34.80% |
IYZ iShares U.S. Telecommunications ETF | 18.92% | 29.28% | 20.53% | 3.90% | -30.29% | 11.69% | 4.13% | 16.14% | -8.59% | -11.86% |
Correlation
The correlation between GREK and IYZ is 0.28, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.28 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.29 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.39 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.39 |
Correlation (All Time) Calculated using the full available price history since Dec 8, 2011 | 0.37 |
The correlation between GREK and IYZ shifts across timeframes, from 0.28 (1 year) to 0.39 (10 years), reflecting how their relationship changes across market environments.
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Return for Risk
GREK vs. IYZ — Risk / Return Rank
GREK
IYZ
GREK vs. IYZ - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Global X MSCI Greece ETF (GREK) and iShares U.S. Telecommunications ETF (IYZ). 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.
| GREK | IYZ | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.83 | ||
| Sortino ratioReturn per unit of downside risk | -0.92 | ||
| Omega ratioGain probability vs. loss probability | 1.20 | 1.33 | -0.13 |
| Calmar ratioReturn relative to maximum drawdown | 1.20 | 2.91 | -1.71 |
| Martin ratioReturn relative to average drawdown | 3.69 | 10.01 | -6.32 |
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Drawdowns
GREK vs. IYZ - Drawdown Comparison
The maximum GREK drawdown since its inception was -79.50%, roughly equal to the maximum IYZ drawdown of -77.11%. Use the drawdown chart below to compare losses from any high point for GREK and IYZ.
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Drawdown Indicators
| GREK | IYZ | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -79.50% | -77.11% | -2.39% |
Max Drawdown (1Y)Largest decline over 1 year | -21.32% | -12.60% | -8.72% |
Max Drawdown (3Y)Largest decline over 3 years | -22.63% | -13.85% | -8.78% |
Max Drawdown (5Y)Largest decline over 5 years | -30.46% | -39.74% | +9.28% |
Max Drawdown (10Y)Largest decline over 10 years | -57.04% | -39.74% | -17.30% |
Current DrawdownCurrent decline from peak | -4.93% | -12.60% | +7.67% |
Average DrawdownAverage peak-to-trough decline | -44.97% | -39.99% | -4.98% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 6.93% | 3.66% | +3.27% |
Volatility
GREK vs. IYZ - Volatility Comparison
The current volatility for Global X MSCI Greece ETF (GREK) is 5.98%, while iShares U.S. Telecommunications ETF (IYZ) has a volatility of 6.35%. This indicates that GREK experiences smaller price fluctuations and is considered to be less risky than IYZ based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| GREK | IYZ | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 5.98% | 6.35% | -0.37% |
Volatility (6M)Calculated over the trailing 6-month period | 21.10% | 16.50% | +4.60% |
Volatility (1Y)Calculated over the trailing 1-year period | 24.36% | 19.53% | +4.83% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 24.39% | 19.07% | +5.32% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 28.85% | 19.31% | +9.54% |
GREK vs. IYZ - Expense Ratio Comparison
GREK has a 0.58% expense ratio, which is higher than IYZ's 0.42% expense ratio.
Dividends
GREK vs. IYZ - Dividend Comparison
GREK's dividend yield for the trailing twelve months is around 2.61%, more than IYZ's 1.76% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
GREK Global X MSCI Greece ETF | 2.61% | 3.46% | 4.63% | 2.61% | 2.82% | 2.16% | 2.62% | 2.25% | 2.41% | 2.13% | 1.95% | 1.52% |
IYZ iShares U.S. Telecommunications ETF | 1.76% | 2.04% | 1.94% | 2.27% | 2.55% | 2.51% | 2.60% | 2.36% | 2.15% | 3.54% | 2.27% | 1.98% |
Frequently Asked Questions
GREK and IYZ have a correlation of 0.28, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
IYZ has higher volatility (6.35%) compared to GREK (5.98%). In terms of maximum drawdown, GREK dropped -79.50% vs IYZ's -77.11%.
On 10-year performance, GREK leads with 16.17% vs 4.05% for IYZ. On fees, IYZ is cheaper at 0.42% per year. On volatility, GREK has been the lower-risk option at 5.98%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 10-year period, GREK has performed better with a 16.17% return vs 4.05%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
IYZ is cheaper with a 0.42% expense ratio, compared with 0.58% for GREK.
GREK has the higher dividend yield at 2.61%, compared with 1.76% for IYZ.
GREK is categorized as Emerging Markets Equities, while IYZ is Communications Equities. GREK tracks MSCI All Greece Select 25-50, while IYZ tracks Dow Jones U.S. Select Telecommunications Index. They also come from different issuers: Global X and iShares. Their fees differ too: 0.58% for GREK and 0.42% for IYZ.
IYZ currently has the higher Sharpe Ratio (1.88 vs 1.05), 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.
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