SOLR vs. ION

Last updated Jun 4, 2026

SOLR (SmartETFs Sustainable Energy II ETF) and ION (Proshares S&P Global Core Battery Metals ETF) are both Energy Equities funds. SOLR is actively managed, while ION is passively managed. Over the past 3 years, SOLR returned 6.70%/yr vs 18.91%/yr for ION. A 0.59 correlation means they provide meaningful diversification when combined. SOLR charges 0.79%/yr vs 0.58%/yr for ION.

Performance

SOLR vs. ION - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in SmartETFs Sustainable Energy II ETF (SOLR) 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, SOLR achieves a 19.19% return, which is significantly higher than ION's 14.02% return.

SOLR

• 1D: -0.46%
• 1M: 7.74%
• YTD: 19.19%
• 6M: 18.35%
• 1Y: 42.02%
• 3Y*: 6.70%
• 5Y*: 4.70%
• 10Y*: —

ION

• 1D: -3.20%
• 1M: -9.27%
• YTD: 14.02%
• 6M: 27.44%
• 1Y: 123.41%
• 3Y*: 18.91%
• 5Y*: —
• 10Y*: —

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

SOLR vs. ION - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
SOLR SmartETFs Sustainable Energy II ETF	19.19%	26.72%	-12.41%	-0.78%	-7.00%
ION Proshares S&P Global Core Battery Metals ETF	14.02%	108.37%	-20.02%	-14.10%	-8.86%

Correlation

The correlation between SOLR and ION is 0.49, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.49
Correlation (3Y) Calculated over the trailing 3-year period	0.58
Correlation (All Time) Calculated using the full available price history since Dec 2, 2022	0.59

The correlation between SOLR and ION shifts across timeframes, from 0.49 (1 year) to 0.59 (all time), reflecting how their relationship changes across market environments.

SOLR vs. ION - Sectors Allocation Comparison

Sectors	SOLR	ION
Industrials	46.4%	1.6%
Technology	18.5%	-
Utilities	15.0%	-
Energy	6.8%	2.4%
Basic Materials	5.4%	14.5%
Financial Services	5.3%	13.0%
Consumer Cyclical	2.6%	-
Communication Services	-	-
Consumer Defensive	-	-
Healthcare	-	1.7%
Real Estate	-	2.4%

Return for Risk

SOLR vs. ION — Risk / Return Rank

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

SOLR

SOLR Risk / Return Rank: 62
SOLR Sharpe Ratio Rank: 67
SOLR Sortino Ratio Rank: 64
SOLR Omega Ratio Rank: 60
SOLR Calmar Ratio Rank: 59
SOLR Martin Ratio Rank: 59

ION

ION Risk / Return Rank: 84
ION Sharpe Ratio Rank: 91
ION Sortino Ratio Rank: 76
ION Omega Ratio Rank: 75
ION Calmar Ratio Rank: 89
ION Martin Ratio Rank: 87

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.

SOLR vs. ION - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for SmartETFs Sustainable Energy II ETF (SOLR) 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.

	SOLR	ION	Difference
Sharpe ratio: Return per unit of total volatility	2.17	3.27	-1.10
Sortino ratio: Return per unit of downside risk	2.94	3.45	-0.51
Omega ratio: Gain probability vs. loss probability	1.36	1.45	-0.09
Calmar ratio: Return relative to maximum drawdown	2.89	5.33	-2.44
Martin ratio: Return relative to average drawdown	10.24	18.79	-8.55
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SOLR vs. ION - Sharpe Ratio Comparison

The current SOLR Sharpe Ratio is 2.17, which is lower than the ION Sharpe Ratio of 3.27. The chart below compares the historical Sharpe Ratios of SOLR 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.

Sharpe Ratios by Period

	SOLR	ION	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.17	3.27	-1.10
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.21	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.36	0.39	-0.03

Drawdowns

SOLR vs. ION - Drawdown Comparison

The maximum SOLR drawdown since its inception was -39.46%, smaller than the maximum ION drawdown of -52.08%. Use the drawdown chart below to compare losses from any high point for SOLR and ION.

Drawdown Indicators

	SOLR	ION	Difference
Max Drawdown Largest peak-to-trough decline	-39.46%	-52.08%	+12.62%
Max Drawdown (1Y) Largest decline over 1 year	-14.63%	-23.30%	+8.67%
Max Drawdown (3Y) Largest decline over 3 years	-34.66%	-46.47%	+11.81%
Max Drawdown (5Y) Largest decline over 5 years	-39.46%	—	—
Current Drawdown Current decline from peak	-0.46%	-13.99%	+13.53%
Average Drawdown Average peak-to-trough decline	-15.59%	-23.70%	+8.11%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.11%	6.59%	-2.48%

Volatility

SOLR vs. ION - Volatility Comparison

The current volatility for SmartETFs Sustainable Energy II ETF (SOLR) is 7.61%, while Proshares S&P Global Core Battery Metals ETF (ION) has a volatility of 12.06%. This indicates that SOLR 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

	SOLR	ION	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.61%	12.06%	-4.45%
Volatility (6M) Calculated over the trailing 6-month period	15.45%	29.90%	-14.45%
Volatility (1Y) Calculated over the trailing 1-year period	19.46%	37.92%	-18.46%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.16%	31.08%	-8.92%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.73%	31.08%	-8.35%

SOLR vs. ION - Expense Ratio Comparison

SOLR has a 0.79% expense ratio, which is higher than ION's 0.58% expense ratio.

Dividends

SOLR vs. ION - Dividend Comparison

SOLR's dividend yield for the trailing twelve months is around 0.56%, less than ION's 1.40% yield.

Position	TTM	2025	2024	2023	2022	2021
ION Proshares S&P Global Core Battery Metals ETF	1.40%	1.63%	1.74%	2.23%	0.13%	0.00%
SOLR SmartETFs Sustainable Energy II ETF	0.56%	0.67%	0.93%	0.42%	1.29%	2.62%

Frequently Asked Questions

Can I hold both SOLR and ION in my portfolio?

SOLR and ION have a correlation of 0.49, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SOLR or ION?

ION has higher volatility (12.06%) compared to SOLR (7.61%). In terms of maximum drawdown, SOLR dropped -39.46% vs ION's -52.08%.

Which ETF is better, SOLR or ION?

On 3-year performance, ION leads with 18.91% vs 6.70% for SOLR. On fees, ION is cheaper at 0.58% per year. On volatility, SOLR has been the lower-risk option at 7.61%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, SOLR or ION?

Over the 3-year period, ION has performed better with a 18.91% return vs 6.70%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, SOLR or ION?

ION is cheaper with a 0.58% expense ratio, compared with 0.79% for SOLR.

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

ION has the higher dividend yield at 1.40%, compared with 0.56% for SOLR.

What is the main difference between SOLR and ION?

They also come from different issuers: SmartETFs and ProShares. Their fees differ too: 0.79% for SOLR and 0.58% for ION.

Which has better risk-adjusted returns?

ION currently has the higher Sharpe Ratio (3.27 vs 2.17), 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.