LINK vs. COPX

Last updated Jun 6, 2026

LINK (Interlink Electronics, Inc.) is a stock, while COPX (Global X Copper Miners ETF) is Materials fund tracking the Solactive Global Copper Miners Total Return Index. Over the past 10 years, LINK returned -0.53%/yr vs 20.17%/yr for COPX. At a 0.05 correlation, their price movements are largely independent.

Performance

LINK vs. COPX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Interlink Electronics, Inc. (LINK) and Global X Copper Miners ETF (COPX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, LINK achieves a 26.55% return, which is significantly higher than COPX's 12.33% return. Over the past 10 years, LINK has underperformed COPX with an annualized return of -0.53%, while COPX has yielded a comparatively higher 20.17% annualized return.

LINK

• 1D: -6.48%
• 1M: 42.32%
• YTD: 26.55%
• 6M: 36.01%
• 1Y: 24.83%
• 3Y*: 3.92%
• 5Y*: 0.09%
• 10Y*: -0.53%

COPX

• 1D: -10.62%
• 1M: -3.51%
• YTD: 12.33%
• 6M: 21.35%
• 1Y: 91.56%
• 3Y*: 32.23%
• 5Y*: 17.20%
• 10Y*: 20.17%

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

LINK vs. COPX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
LINK Interlink Electronics, Inc.	26.55%	-6.66%	-26.76%	56.50%	-15.75%	7.61%	89.47%	126.19%	-59.77%	-25.61%
COPX Global X Copper Miners ETF	12.33%	93.50%	3.57%	8.38%	-0.76%	23.39%	51.66%	12.48%	-31.31%	38.92%

Correlation

The correlation between LINK and COPX is 0.19, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.19
Correlation (3Y) Calculated over the trailing 3-year period	0.12
Correlation (5Y) Calculated over the trailing 5-year period	0.12
Correlation (10Y) Calculated over the trailing 10-year period	0.07
Correlation (All Time) Calculated using the full available price history since Feb 27, 2012	0.05

The correlation between LINK and COPX shifts across timeframes, from 0.05 (all time) to 0.19 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

LINK vs. COPX — Risk / Return Rank

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

LINK

LINK Risk / Return Rank: 52
LINK Sharpe Ratio Rank: 50
LINK Sortino Ratio Rank: 59
LINK Omega Ratio Rank: 55
LINK Calmar Ratio Rank: 50
LINK Martin Ratio Rank: 47

COPX

COPX Risk / Return Rank: 60
COPX Sharpe Ratio Rank: 66
COPX Sortino Ratio Rank: 52
COPX Omega Ratio Rank: 55
COPX Calmar Ratio Rank: 68
COPX Martin Ratio Rank: 60

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.

LINK vs. COPX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Interlink Electronics, Inc. (LINK) and Global X Copper Miners ETF (COPX). 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.

	LINK	COPX	Difference
Sharpe ratio: Return per unit of total volatility	0.24	2.15	-1.91
Sortino ratio: Return per unit of downside risk	1.18	2.50	-1.32
Omega ratio: Gain probability vs. loss probability	1.13	1.34	-0.20
Calmar ratio: Return relative to maximum drawdown	0.35	3.31	-2.96
Martin ratio: Return relative to average drawdown	0.51	10.53	-10.02
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

LINK vs. COPX - Sharpe Ratio Comparison

The current LINK Sharpe Ratio is 0.24, which is lower than the COPX Sharpe Ratio of 2.15. The chart below compares the historical Sharpe Ratios of LINK and COPX, 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

	LINK	COPX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.24	2.15	-1.91
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.00	0.47	-0.47
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	-0.01	0.57	-0.57
Sharpe Ratio (All Time) Calculated using the full available price history	0.11	0.17	-0.05

Drawdowns

LINK vs. COPX - Drawdown Comparison

The maximum LINK drawdown since its inception was -87.37%, which is greater than COPX's maximum drawdown of -83.16%. Use the drawdown chart below to compare losses from any high point for LINK and COPX.

Drawdown Indicators

	LINK	COPX	Difference
Max Drawdown Largest peak-to-trough decline	-87.37%	-83.16%	-4.21%
Max Drawdown (1Y) Largest decline over 1 year	-71.27%	-27.82%	-43.45%
Max Drawdown (3Y) Largest decline over 3 years	-71.27%	-39.72%	-31.55%
Max Drawdown (5Y) Largest decline over 5 years	-71.27%	-42.12%	-29.15%
Max Drawdown (10Y) Largest decline over 10 years	-87.37%	-65.41%	-21.96%
Current Drawdown Current decline from peak	-48.71%	-15.74%	-32.97%
Average Drawdown Average peak-to-trough decline	-43.35%	-39.29%	-4.06%
Ulcer Index Depth and duration of drawdowns from previous peaks	48.61%	8.72%	+39.89%

Volatility

LINK vs. COPX - Volatility Comparison

Interlink Electronics, Inc. (LINK) has a higher volatility of 31.72% compared to Global X Copper Miners ETF (COPX) at 18.20%. This indicates that LINK's price experiences larger fluctuations and is considered to be riskier than COPX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	LINK	COPX	Difference
Volatility (1M) Calculated over the trailing 1-month period	31.72%	18.20%	+13.52%
Volatility (6M) Calculated over the trailing 6-month period	60.77%	37.26%	+23.51%
Volatility (1Y) Calculated over the trailing 1-year period	105.26%	42.83%	+62.43%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	79.11%	36.80%	+42.31%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	94.63%	35.68%	+58.95%

Dividends

LINK vs. COPX - Dividend Comparison

LINK has not paid dividends to shareholders, while COPX's dividend yield for the trailing twelve months is around 2.38%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
COPX Global X Copper Miners ETF	2.38%	2.68%	1.80%	2.39%	3.14%	1.48%	1.30%	1.37%	2.59%	1.57%	0.60%	1.20%
LINK Interlink Electronics, Inc.	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both LINK and COPX in my portfolio?

LINK and COPX have a correlation of 0.19, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, LINK or COPX?

LINK has higher volatility (31.72%) compared to COPX (18.20%). In terms of maximum drawdown, LINK dropped -87.37% vs COPX's -83.16%.

Which has better risk-adjusted returns?

COPX currently has the higher Sharpe Ratio (2.15 vs 0.24), 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.