ERO vs QQQ: Correlation
How closely do Ero Copper Corp. (ERO) and Invesco QQQ Trust (QQQ) trade together? Their weekly returns over three years give a correlation of 0.41, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ERO and QQQ?
Across a 3-year window, the weekly returns of ERO and QQQ correlate at 0.41, moderate. Recent behaviour matches the longer record: 0.44 over 1 year against 0.41 over 3. Stretching to 5 years gives 0.38, with an annualized covariance of 440.6 %².
Out of 10 assets tracked against ERO, QQQ lands near the bottom at #6. Correlation aside, the last 12 months split them widely, with ERO ahead by 148.1 points (+174.4% versus +26.3%). One caveat on sizing: ERO is 2.8 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
How is this computed?
Pearson correlation on weekly returns: ρ(A,B) = cov(rA, rB) / (σA · σB), over windows of 52, 156 and 260 weeks. Covariance is annualized (×52) and expressed in %². Full definitions on the methodology page.
ERO vs QQQ: side by side
| ERO (Ero Copper Corp.) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | +174.4% | +26.3% |
| 5-year return | +110.6% | +95.4% |
| Volatility (ann.) | 54.7% | 19.6% |
| Beta vs S&P 500 | 1.53 | 1.28 |
| Max drawdown (3Y) | -59.7% | -22.8% |
| Market cap | $4.2B | – |
| P/E (trailing) | 13.3 | – |
| Dividend yield | 0.00% | 0.44% |
| Expense ratio | – | 0.18% |
| Assets under management | – | $452.8B |
| Sector / category | US Listed | ETF · US Growth & Tech |
QQQ is a Large Growth fund from Invesco: $452.8B under management, 104 holdings, a 0.18% expense ratio, a 0.44% trailing dividend yield.
Year-by-year returns
| Year | ERO | QQQ |
|---|---|---|
| 2022 | -10.1% | -32.6% |
| 2023 | +14.8% | +54.9% |
| 2024 | -14.6% | +25.6% |
| 2025 | +109.9% | +20.8% |
| 2026 | +40.8% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ERO and QQQ good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.41 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between ERO and QQQ?
The ERO/QQQ correlation stands at 0.41 on a 3-year window (1 year: 0.44, 5 years: 0.38), computed from weekly returns as of 2026-08-27.
Is QQQ a good diversifier for ERO?
Yes, to a useful degree: a correlation of 0.41 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.41 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
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Related comparisons
Hubs: ERO correlations · QQQ correlations
