LIMI vs. ION

Last updated Jun 23, 2026

LIMI (Themes Lithium & Battery Metal Miners ETF) and ION (Proshares S&P Global Core Battery Metals ETF) are both Lithium & Battery Metals funds - LIMI tracks the BITA Global Lithium and Battery Metals Select Index while ION tracks the S&P Global Core Battery Metals Index - Benchmark TR Net. Both are passively managed. Over the past year, LIMI returned 144.15% vs 111.43% for ION. Their correlation of 0.87 suggests significant overlap in exposure. LIMI charges 0.35%/yr vs 0.58%/yr for ION.

Performance

LIMI vs. ION - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Themes Lithium & Battery Metal Miners ETF (LIMI) 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, LIMI achieves a 14.44% return, which is significantly higher than ION's 8.52% return.

LIMI

• 1D: -0.76%
• 1M: -5.92%
• YTD: 14.44%
• 6M: 18.30%
• 1Y: 144.15%
• 3Y*: —
• 5Y*: —
• 10Y*: —

ION

• 1D: -0.40%
• 1M: -6.82%
• YTD: 8.52%
• 6M: 8.91%
• 1Y: 111.43%
• 3Y*: 17.02%
• 5Y*: —
• 10Y*: —

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

LIMI vs. ION - Yearly Performance Comparison

	2026 (YTD)	2025	2024
LIMI Themes Lithium & Battery Metal Miners ETF	14.44%	91.22%	-0.82%
ION Proshares S&P Global Core Battery Metals ETF	8.52%	108.37%	-1.29%

Correlation

The correlation between LIMI and ION is 0.87, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.87
Correlation (All Time) Calculated using the full available price history since Sep 24, 2024	0.87

The correlation between LIMI and ION has been stable across timeframes, ranging from 0.87 to 0.87 - a consistent structural relationship.

Return for Risk

LIMI vs. ION — Risk / Return Rank

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

LIMI

LIMI Risk / Return Rank: 86
LIMI Sharpe Ratio Rank: 93
LIMI Sortino Ratio Rank: 82
LIMI Omega Ratio Rank: 77
LIMI Calmar Ratio Rank: 93
LIMI Martin Ratio Rank: 86

ION

ION Risk / Return Rank: 80
ION Sharpe Ratio Rank: 89
ION Sortino Ratio Rank: 72
ION Omega Ratio Rank: 71
ION Calmar Ratio Rank: 87
ION Martin Ratio Rank: 78

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.

LIMI vs. ION - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Themes Lithium & Battery Metal Miners ETF (LIMI) 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.

	LIMI	ION	Difference
Sharpe ratio: Return per unit of total volatility	3.25	2.85	+0.40
Sortino ratio: Return per unit of downside risk	3.48	3.13	+0.35
Omega ratio: Gain probability vs. loss probability	1.44	1.40	+0.03
Calmar ratio: Return relative to maximum drawdown	6.31	4.81	+1.50
Martin ratio: Return relative to average drawdown	17.46	14.58	+2.87

LIMI vs. ION - Sharpe Ratio Comparison

The current LIMI Sharpe Ratio is 3.25, which is comparable to the ION Sharpe Ratio of 2.85. The chart below compares the historical Sharpe Ratios of LIMI 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

LIMI vs. ION - Drawdown Comparison

The maximum LIMI drawdown since its inception was -43.77%, smaller than the maximum ION drawdown of -52.08%. Use the drawdown chart below to compare losses from any high point for LIMI and ION.

Drawdown Indicators

	LIMI	ION	Difference
Max Drawdown Largest peak-to-trough decline	-43.77%	-52.08%	+8.31%
Max Drawdown (1Y) Largest decline over 1 year	-23.00%	-23.30%	+0.30%
Max Drawdown (3Y) Largest decline over 3 years	—	-46.47%	—
Current Drawdown Current decline from peak	-15.24%	-18.15%	+2.91%
Average Drawdown Average peak-to-trough decline	-13.09%	-23.60%	+10.51%
Ulcer Index Depth and duration of drawdowns from previous peaks	8.29%	7.67%	+0.62%

Volatility

LIMI vs. ION - Volatility Comparison

The current volatility for Themes Lithium & Battery Metal Miners ETF (LIMI) is 11.79%, while Proshares S&P Global Core Battery Metals ETF (ION) has a volatility of 13.14%. This indicates that LIMI 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

	LIMI	ION	Difference
Volatility (1M) Calculated over the trailing 1-month period	11.79%	13.14%	-1.35%
Volatility (6M) Calculated over the trailing 6-month period	30.32%	31.78%	-1.46%
Volatility (1Y) Calculated over the trailing 1-year period	44.67%	39.41%	+5.26%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	41.63%	31.50%	+10.13%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	41.63%	31.50%	+10.13%

LIMI vs. ION - Expense Ratio Comparison

LIMI has a 0.35% expense ratio, which is lower than ION's 0.58% expense ratio.

Dividends

LIMI vs. ION - Dividend Comparison

LIMI's dividend yield for the trailing twelve months is around 0.47%, less than ION's 1.47% yield.

Position	TTM	2025	2024	2023	2022
ION Proshares S&P Global Core Battery Metals ETF	1.47%	1.63%	1.74%	2.23%	0.13%
LIMI Themes Lithium & Battery Metal Miners ETF	0.47%	0.54%	8.14%	0.00%	0.00%

Frequently Asked Questions

Can I hold both LIMI and ION in my portfolio?

LIMI and ION have a correlation of 0.87, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, LIMI or ION?

ION has higher volatility (13.14%) compared to LIMI (11.79%). In terms of maximum drawdown, LIMI dropped -43.77% vs ION's -52.08%.

Which ETF is better, LIMI or ION?

On 1-year performance, LIMI leads with 144.15% vs 111.43% for ION. On fees, LIMI is cheaper at 0.35% per year. On volatility, LIMI has been the lower-risk option at 11.79%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, LIMI or ION?

Over the 1-year period, LIMI has performed better with a 144.15% return vs 111.43%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, LIMI or ION?

LIMI is cheaper with a 0.35% expense ratio, compared with 0.58% for ION.

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

ION has the higher dividend yield at 1.47%, compared with 0.47% for LIMI.

What is the main difference between LIMI and ION?

LIMI tracks BITA Global Lithium and Battery Metals Select Index, while ION tracks S&P Global Core Battery Metals Index - Benchmark TR Net. They also come from different issuers: Themes and ProShares. Their fees differ too: 0.35% for LIMI and 0.58% for ION.

Which has better risk-adjusted returns?

LIMI currently has the higher Sharpe Ratio (3.25 vs 2.85), 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.