XLK vs. GREK

Last updated Jun 9, 2026

XLK (State Street Technology Select Sector SPDR ETF) and GREK (Global X MSCI Greece ETF) are both exchange-traded funds - XLK is a Technology Equities fund tracking the S&P Technology Select Sector Daily Capped 35/20 Index, while GREK is a Emerging Markets Equities fund tracking the MSCI All Greece Select 25-50. Both are passively managed. Over the past 10 years, XLK returned 25.04%/yr vs 14.76%/yr for GREK. At a 0.42 correlation, their price movements are largely independent. XLK charges 0.08%/yr vs 0.58%/yr for GREK.

Performance

XLK vs. GREK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in State Street Technology Select Sector SPDR ETF (XLK) and Global X MSCI Greece ETF (GREK). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, XLK achieves a 28.09% return, which is significantly higher than GREK's 10.53% return. Over the past 10 years, XLK has outperformed GREK with an annualized return of 25.04%, while GREK has yielded a comparatively lower 14.76% annualized return.

XLK

• 1D: 2.15%
• 1M: 4.93%
• YTD: 28.09%
• 6M: 25.10%
• 1Y: 55.42%
• 3Y*: 31.33%
• 5Y*: 22.26%
• 10Y*: 25.04%

GREK

• 1D: 1.58%
• 1M: 1.44%
• YTD: 10.53%
• 6M: 11.07%
• 1Y: 36.15%
• 3Y*: 31.41%
• 5Y*: 23.55%
• 10Y*: 14.76%

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

XLK vs. GREK - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
XLK State Street Technology Select Sector SPDR ETF	28.09%	24.61%	21.63%	56.02%	-27.73%	34.74%	43.62%	49.86%	-1.68%	34.26%
GREK Global X MSCI Greece ETF	10.53%	76.11%	9.53%	42.72%	3.64%	6.14%	-13.89%	50.20%	-31.25%	34.80%

Correlation

The correlation between XLK and GREK is 0.48, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.48
Correlation (3Y) Calculated over the trailing 3-year period	0.40
Correlation (5Y) Calculated over the trailing 5-year period	0.47
Correlation (10Y) Calculated over the trailing 10-year period	0.45
Correlation (All Time) Calculated using the full available price history since Dec 9, 2011	0.42

XLK vs. GREK - Sectors Allocation Comparison

Sectors	XLK	GREK
Technology	99.7%	-
Energy	0.2%	8.4%
Industrials	0.1%	13.5%
Basic Materials	-	3.2%
Communication Services	-	4.6%
Consumer Cyclical	-	9.6%
Consumer Defensive	-	1.1%
Financial Services	-	47.1%
Healthcare	-	-
Real Estate	-	1.0%
Utilities	-	11.6%

Return for Risk

XLK vs. GREK — Risk / Return Rank

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

XLK

XLK Risk / Return Rank: 77
XLK Sharpe Ratio Rank: 86
XLK Sortino Ratio Rank: 76
XLK Omega Ratio Rank: 79
XLK Calmar Ratio Rank: 76
XLK Martin Ratio Rank: 69

GREK

GREK Risk / Return Rank: 44
GREK Sharpe Ratio Rank: 48
GREK Sortino Ratio Rank: 51
GREK Omega Ratio Rank: 47
GREK Calmar Ratio Rank: 38
GREK Martin Ratio Rank: 37

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.

XLK vs. GREK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for State Street Technology Select Sector SPDR ETF (XLK) and Global X MSCI Greece ETF (GREK). 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.

	XLK	GREK	Difference
Sharpe ratio: Return per unit of total volatility	2.53	1.51	+1.02
Sortino ratio: Return per unit of downside risk	3.06	2.26	+0.80
Omega ratio: Gain probability vs. loss probability	1.42	1.27	+0.15
Calmar ratio: Return relative to maximum drawdown	3.50	1.70	+1.79
Martin ratio: Return relative to average drawdown	11.58	5.27	+6.31
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

XLK vs. GREK - Sharpe Ratio Comparison

The current XLK Sharpe Ratio is 2.53, which is higher than the GREK Sharpe Ratio of 1.51. The chart below compares the historical Sharpe Ratios of XLK and GREK, 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

	XLK	GREK	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.53	1.51	+1.02
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.89	0.97	-0.08
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	1.02	0.50	+0.52
Sharpe Ratio (All Time) Calculated using the full available price history	0.41	0.16	+0.25

Drawdowns

XLK vs. GREK - Drawdown Comparison

The maximum XLK drawdown since its inception was -82.05%, roughly equal to the maximum GREK drawdown of -79.50%. Use the drawdown chart below to compare losses from any high point for XLK and GREK.

Drawdown Indicators

	XLK	GREK	Difference
Max Drawdown Largest peak-to-trough decline	-82.05%	-79.50%	-2.55%
Max Drawdown (1Y) Largest decline over 1 year	-15.92%	-21.32%	+5.40%
Max Drawdown (3Y) Largest decline over 3 years	-25.66%	-22.63%	-3.03%
Max Drawdown (5Y) Largest decline over 5 years	-33.56%	-30.46%	-3.10%
Max Drawdown (10Y) Largest decline over 10 years	-33.56%	-57.04%	+23.48%
Current Drawdown Current decline from peak	-7.08%	-5.63%	-1.45%
Average Drawdown Average peak-to-trough decline	-34.95%	-45.30%	+10.35%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.80%	6.88%	-2.08%

Volatility

XLK vs. GREK - Volatility Comparison

State Street Technology Select Sector SPDR ETF (XLK) has a higher volatility of 10.42% compared to Global X MSCI Greece ETF (GREK) at 8.07%. This indicates that XLK's price experiences larger fluctuations and is considered to be riskier than GREK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	XLK	GREK	Difference
Volatility (1M) Calculated over the trailing 1-month period	10.42%	8.07%	+2.35%
Volatility (6M) Calculated over the trailing 6-month period	18.32%	20.47%	-2.15%
Volatility (1Y) Calculated over the trailing 1-year period	22.08%	24.14%	-2.06%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	25.10%	24.41%	+0.69%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.60%	29.84%	-5.24%

XLK vs. GREK - Expense Ratio Comparison

XLK has a 0.08% expense ratio, which is lower than GREK's 0.58% expense ratio.

Dividends

XLK vs. GREK - Dividend Comparison

XLK's dividend yield for the trailing twelve months is around 0.41%, less than GREK's 3.13% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
GREK Global X MSCI Greece ETF	3.13%	3.46%	4.63%	2.61%	2.82%	2.16%	2.62%	2.25%	2.41%	2.13%	1.95%	1.52%
XLK State Street Technology Select Sector SPDR ETF	0.41%	0.54%	0.66%	0.76%	1.04%	0.65%	0.92%	1.16%	1.60%	1.37%	1.74%	1.79%

Frequently Asked Questions

Can I hold both XLK and GREK in my portfolio?

XLK and GREK have a correlation of 0.48, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, XLK or GREK?

XLK has higher volatility (10.42%) compared to GREK (8.07%). In terms of maximum drawdown, XLK dropped -82.05% vs GREK's -79.50%.

Which ETF is better, XLK or GREK?

On 10-year performance, XLK leads with 25.04% vs 14.76% for GREK. On fees, XLK is cheaper at 0.08% per year. On volatility, GREK has been the lower-risk option at 8.07%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, XLK or GREK?

Over the 10-year period, XLK has performed better with a 25.04% return vs 14.76%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, XLK or GREK?

XLK is cheaper with a 0.08% expense ratio, compared with 0.58% for GREK.

Which ETF pays a higher dividend yield, XLK or GREK?

GREK has the higher dividend yield at 3.13%, compared with 0.41% for XLK.

What is the main difference between XLK and GREK?

XLK is categorized as Technology Equities, while GREK is Emerging Markets Equities. XLK tracks S&P Technology Select Sector Daily Capped 35/20 Index, while GREK tracks MSCI All Greece Select 25-50. They also come from different issuers: State Street and Global X. Their fees differ too: 0.08% for XLK and 0.58% for GREK.

Which has better risk-adjusted returns?

XLK currently has the higher Sharpe Ratio (2.53 vs 1.51), 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.