GREK vs. ION

Last updated Jun 14, 2026

GREK (Global X MSCI Greece ETF) and ION (Proshares S&P Global Core Battery Metals ETF) are both exchange-traded funds - GREK is a Emerging Markets Equities fund tracking the MSCI All Greece Select 25-50, while ION is a Lithium & Battery Metals fund tracking the S&P Global Core Battery Metals Index - Benchmark TR Net. Both are passively managed. Over the past 3 years, GREK returned 32.67%/yr vs 17.31%/yr for ION. At a 0.40 correlation, their price movements are largely independent. Both charge a 0.58% expense ratio.

Performance

GREK vs. ION - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Global X MSCI Greece ETF (GREK) and Proshares S&P Global Core Battery Metals ETF (ION). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, GREK achieves a 15.45% return, which is significantly higher than ION's 13.12% return.

GREK

• 1D: 0.87%
• 1M: 7.93%
• YTD: 15.45%
• 6M: 15.54%
• 1Y: 40.83%
• 3Y*: 32.67%
• 5Y*: 24.30%
• 10Y*: 16.01%

ION

• 1D: 4.15%
• 1M: -8.49%
• YTD: 13.12%
• 6M: 23.38%
• 1Y: 112.30%
• 3Y*: 17.31%
• 5Y*: —
• 10Y*: —

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

GREK vs. ION - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
GREK Global X MSCI Greece ETF	15.45%	76.11%	9.53%	42.72%	3.14%
ION Proshares S&P Global Core Battery Metals ETF	13.12%	108.37%	-20.02%	-14.10%	-8.45%

Correlation

The correlation between GREK and ION is 0.43, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.43
Correlation (3Y) Calculated over the trailing 3-year period	0.39
Correlation (All Time) Calculated using the full available price history since Dec 1, 2022	0.40

GREK vs. ION - Sectors Allocation Comparison

Sectors	GREK	ION
Financial Services	48.3%	13.0%
Industrials	13.2%	1.7%
Utilities	12.4%	-
Consumer Cyclical	9.0%	-
Energy	7.6%	2.3%
Communication Services	4.2%	-
Basic Materials	3.2%	13.7%
Consumer Defensive	1.1%	-
Real Estate	1.0%	2.3%
Healthcare	-	1.7%
Technology	-	-

Return for Risk

GREK vs. ION — Risk / Return Rank

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

GREK

GREK Risk / Return Rank: 49
GREK Sharpe Ratio Rank: 54
GREK Sortino Ratio Rank: 57
GREK Omega Ratio Rank: 51
GREK Calmar Ratio Rank: 41
GREK Martin Ratio Rank: 40

ION

ION Risk / Return Rank: 84
ION Sharpe Ratio Rank: 92
ION Sortino Ratio Rank: 79
ION Omega Ratio Rank: 78
ION Calmar Ratio Rank: 89
ION Martin Ratio Rank: 84

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.

GREK vs. ION - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Global X MSCI Greece ETF (GREK) and Proshares S&P Global Core Battery Metals ETF (ION). 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	ION	Difference
Sharpe ratio: Return per unit of total volatility	1.59	2.81	-1.21
Sortino ratio: Return per unit of downside risk	2.38	3.09	-0.71
Omega ratio: Gain probability vs. loss probability	1.28	1.40	-0.12
Calmar ratio: Return relative to maximum drawdown	1.82	4.74	-2.92
Martin ratio: Return relative to average drawdown	5.62	15.01	-9.39

GREK vs. ION - Sharpe Ratio Comparison

The current GREK Sharpe Ratio is 1.59, which is lower than the ION Sharpe Ratio of 2.81. The chart below compares the historical Sharpe Ratios of GREK and ION, 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

GREK vs. ION - Drawdown Comparison

The maximum GREK drawdown since its inception was -79.50%, which is greater than ION's maximum drawdown of -52.08%. Use the drawdown chart below to compare losses from any high point for GREK and ION.

Drawdown Indicators

	GREK	ION	Difference
Max Drawdown Largest peak-to-trough decline	-79.50%	-52.08%	-27.42%
Max Drawdown (1Y) Largest decline over 1 year	-21.32%	-23.30%	+1.98%
Max Drawdown (3Y) Largest decline over 3 years	-22.63%	-46.47%	+23.84%
Max Drawdown (5Y) Largest decline over 5 years	-30.46%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-57.04%	—	—
Current Drawdown Current decline from peak	-1.44%	-14.68%	+13.24%
Average Drawdown Average peak-to-trough decline	-45.25%	-23.64%	-21.61%
Ulcer Index Depth and duration of drawdowns from previous peaks	6.90%	7.34%	-0.44%

Volatility

GREK vs. ION - Volatility Comparison

The current volatility for Global X MSCI Greece ETF (GREK) is 8.69%, while Proshares S&P Global Core Battery Metals ETF (ION) has a volatility of 15.42%. This indicates that GREK experiences smaller price fluctuations and is considered to be less risky than ION based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	GREK	ION	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.69%	15.42%	-6.73%
Volatility (6M) Calculated over the trailing 6-month period	20.65%	31.74%	-11.09%
Volatility (1Y) Calculated over the trailing 1-year period	24.35%	39.38%	-15.03%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	24.44%	31.51%	-7.07%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	29.71%	31.51%	-1.80%

GREK vs. ION - Expense Ratio Comparison

Both GREK and ION have an expense ratio of 0.58%.

Dividends

GREK vs. ION - Dividend Comparison

GREK's dividend yield for the trailing twelve months is around 3.00%, more than ION's 1.41% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
GREK Global X MSCI Greece ETF	3.00%	3.46%	4.63%	2.61%	2.82%	2.16%	2.62%	2.25%	2.41%	2.13%	1.95%	1.52%
ION Proshares S&P Global Core Battery Metals ETF	1.41%	1.63%	1.74%	2.23%	0.13%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both GREK and ION in my portfolio?

GREK and ION have a correlation of 0.43, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, GREK or ION?

ION has higher volatility (15.42%) compared to GREK (8.69%). In terms of maximum drawdown, GREK dropped -79.50% vs ION's -52.08%.

Which ETF is better, GREK or ION?

On 3-year performance, GREK leads with 32.67% vs 17.31% for ION. Both ETFs have the same 0.58% expense ratio. On volatility, GREK has been the lower-risk option at 8.69%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, GREK or ION?

Over the 3-year period, GREK has performed better with a 32.67% return vs 17.31%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, GREK or ION?

GREK and ION have the same expense ratio: 0.58% per year.

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

GREK has the higher dividend yield at 3.00%, compared with 1.41% for ION.

What is the main difference between GREK and ION?

GREK is categorized as Emerging Markets Equities, while ION is Lithium & Battery Metals. GREK tracks MSCI All Greece Select 25-50, while ION tracks S&P Global Core Battery Metals Index - Benchmark TR Net. They also come from different issuers: Global X and ProShares.

Which has better risk-adjusted returns?

ION currently has the higher Sharpe Ratio (2.81 vs 1.59), 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.