IDR vs. ERO
IDR (Idaho Strategic Resources, Inc.) and ERO (Ero Copper Corp) are both stocks. Both are in the Basic Materials sector — IDR in Gold, ERO in Copper. Over the past 5 years, IDR returned 44.40%/yr vs 4.29%/yr for ERO. At a 0.14 correlation, their price movements are largely independent.
Performance
IDR vs. ERO - Performance Comparison
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Returns By Period
In the year-to-date period, IDR achieves a -23.67% return, which is significantly lower than ERO's -9.58% return.
IDR
- 1D
- -0.55%
- 1M
- -10.87%
- 6M
- -37.07%
- YTD
- -23.67%
- 1Y
- 83.53%
- 3Y*
- 75.61%
- 5Y*
- 44.40%
- 10Y*
- 33.74%
ERO
- 1D
- 2.08%
- 1M
- -7.65%
- 6M
- -12.61%
- YTD
- -9.58%
- 1Y
- 69.40%
- 3Y*
- 7.17%
- 5Y*
- 4.29%
- 10Y*
- —
IDR vs. ERO - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
IDR Idaho Strategic Resources, Inc. | -23.67% | 295.49% | 60.95% | 11.07% | -23.39% | 102.06% | 93.38% | -15.00% | 5.26% | 21.60% |
ERO Ero Copper Corp | -9.58% | 109.87% | -14.63% | 14.84% | -10.07% | -5.73% | -10.97% | 151.68% | 21.41% | 52.76% |
Correlation
The correlation between IDR and ERO is 0.42, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.42 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.33 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.25 |
Correlation (All Time) Calculated using the full available price history since Oct 23, 2017 | 0.14 |
Over the past year, IDR and ERO have become more correlated (0.42) than their long-term average of 0.14, meaning their price movements have been converging.
Fundamentals
IDR:
$486.31M
ERO:
$2.67B
IDR:
$1.41
ERO:
$2.79
IDR:
21.82
ERO:
9.16
IDR:
0.03
ERO:
0.10
IDR:
9.42
ERO:
2.89
IDR:
4.21
ERO:
2.44
IDR:
$49.61M
ERO:
$925.20M
IDR:
$23.05M
ERO:
$394.67M
IDR:
$24.61M
ERO:
$528.87M
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Return for Risk
IDR vs. ERO — Risk / Return Rank
IDR
ERO
IDR vs. ERO - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Idaho Strategic Resources, Inc. (IDR) and Ero Copper Corp (ERO). 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.
| IDR | ERO | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.24 | ||
| Sortino ratioReturn per unit of downside risk | -0.01 | ||
| Omega ratioGain probability vs. loss probability | 1.21 | 1.23 | -0.02 |
| Calmar ratioReturn relative to maximum drawdown | 1.81 | 1.94 | -0.13 |
| Martin ratioReturn relative to average drawdown | 3.58 | 4.11 | -0.53 |
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Drawdowns
IDR vs. ERO - Drawdown Comparison
The maximum IDR drawdown since its inception was -93.44%, which is greater than ERO's maximum drawdown of -67.17%. Use the drawdown chart below to compare losses from any high point for IDR and ERO.
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Drawdown Indicators
| IDR | ERO | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -93.44% | -67.17% | -26.27% |
Max Drawdown (1Y)Largest decline over 1 year | -49.96% | -37.97% | -11.99% |
Max Drawdown (3Y)Largest decline over 3 years | -49.96% | -59.84% | +9.88% |
Max Drawdown (5Y)Largest decline over 5 years | -62.42% | -60.24% | -2.18% |
Max Drawdown (10Y)Largest decline over 10 years | -62.42% | — | — |
Current DrawdownCurrent decline from peak | -41.59% | -32.74% | -8.85% |
Average DrawdownAverage peak-to-trough decline | -47.21% | -27.05% | -20.16% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 25.27% | 17.91% | +7.36% |
Volatility
IDR vs. ERO - Volatility Comparison
Idaho Strategic Resources, Inc. (IDR) and Ero Copper Corp (ERO) have volatilities of 19.21% and 19.21%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| IDR | ERO | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 19.21% | 19.21% | 0.00% |
Volatility (6M)Calculated over the trailing 6-month period | 60.99% | 48.83% | +12.16% |
Volatility (1Y)Calculated over the trailing 1-year period | 89.84% | 57.64% | +32.20% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 73.07% | 55.15% | +17.92% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 85.79% | 59.39% | +26.40% |
Dividends
IDR vs. ERO - Dividend Comparison
Neither IDR nor ERO has paid dividends to shareholders.
Financials
IDR vs. ERO - Financials Comparison
This section allows you to compare key financial metrics between Idaho Strategic Resources, Inc. and Ero Copper Corp. You can select fields from income statements, balance sheets, and cash flow statements to easily visualize and compare the financial health of both companies.
Total Revenue: Total amount of money received from sales and other business activities
IDR vs. ERO - Profitability Comparison
IDR - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jul 2026, Idaho Strategic Resources, Inc. reported a gross profit of 8.18M and revenue of 14.48M. Therefore, the gross margin over that period was 56.5%.
ERO - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jul 2026, Ero Copper Corp reported a gross profit of 103.33M and revenue of 259.52M. Therefore, the gross margin over that period was 39.8%.
IDR - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jul 2026, Idaho Strategic Resources, Inc. reported an operating income of 7.58M and revenue of 14.48M, resulting in an operating margin of 52.4%.
ERO - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jul 2026, Ero Copper Corp reported an operating income of 90.17M and revenue of 259.52M, resulting in an operating margin of 34.7%.
IDR - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jul 2026, Idaho Strategic Resources, Inc. reported a net income of 6.39M and revenue of 14.48M, resulting in a net margin of 44.1%.
ERO - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jul 2026, Ero Copper Corp reported a net income of 107.26M and revenue of 259.52M, resulting in a net margin of 41.3%.
Frequently Asked Questions
IDR and ERO have a correlation of 0.42, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
ERO has higher volatility (19.21%) compared to IDR (19.21%). In terms of maximum drawdown, IDR dropped -93.44% vs ERO's -67.17%.
ERO currently has the higher Sharpe Ratio (1.28 vs 1.04), 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.
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