ION vs. GREK

Last updated Jun 14, 2026

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

Performance

ION vs. GREK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Proshares S&P Global Core Battery Metals ETF (ION) 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, ION achieves a 13.12% return, which is significantly lower than GREK's 15.45% return.

ION

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

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%

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

ION vs. GREK - Yearly Performance Comparison

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

Correlation

The correlation between ION and GREK 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

ION vs. GREK - Sectors Allocation Comparison

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

Return for Risk

ION vs. GREK — Risk / Return Rank

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

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

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

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.

ION vs. GREK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Proshares S&P Global Core Battery Metals ETF (ION) 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.

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.

	ION	GREK	Difference
Sharpe ratio: Return per unit of total volatility	2.81	1.59	+1.21
Sortino ratio: Return per unit of downside risk	3.09	2.38	+0.71
Omega ratio: Gain probability vs. loss probability	1.40	1.28	+0.12
Calmar ratio: Return relative to maximum drawdown	4.74	1.82	+2.92
Martin ratio: Return relative to average drawdown	15.01	5.62	+9.39

ION vs. GREK - Sharpe Ratio Comparison

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

Drawdowns

ION vs. GREK - Drawdown Comparison

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

Drawdown Indicators

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

Volatility

ION vs. GREK - Volatility Comparison

Proshares S&P Global Core Battery Metals ETF (ION) has a higher volatility of 15.42% compared to Global X MSCI Greece ETF (GREK) at 8.69%. This indicates that ION'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

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

ION vs. GREK - Expense Ratio Comparison

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

Dividends

ION vs. GREK - Dividend Comparison

ION's dividend yield for the trailing twelve months is around 1.41%, less than GREK's 3.00% 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 ION and GREK in my portfolio?

ION and GREK 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, ION or GREK?

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

Which ETF is better, ION or GREK?

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, ION or GREK?

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, ION or GREK?

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

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

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

What is the main difference between ION and GREK?

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

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.