PSIX vs QQQ: Correlation
How closely do Power Solutions International, Inc. (PSIX) and Invesco QQQ Trust (QQQ) trade together? Their weekly returns over three years give a correlation of 0.35, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PSIX and QQQ?
On 3 years of weekly data the PSIX/QQQ correlation comes out at 0.35, moderate. Recent behaviour matches the longer record: 0.40 over 1 year against 0.35 over 3. The 5-year figure is 0.17, and annualized covariance runs at 719.1 %².
Among the 12 assets we track against PSIX, QQQ sits near the bottom by co-movement, at rank #8. The last year tells two different stories: QQQ led by 79.9 percentage points, -53.6% for PSIX against +26.3% for QQQ. Note the risk asymmetry: PSIX runs 5.3 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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.
PSIX vs QQQ: side by side
| PSIX (Power Solutions International, Inc.) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | -53.6% | +26.3% |
| 5-year return | +670.8% | +95.4% |
| Volatility (ann.) | 104.2% | 19.6% |
| Beta vs S&P 500 | 2.68 | 1.28 |
| Max drawdown (3Y) | -78.0% | -22.8% |
| Market cap | $0.9B | – |
| P/E (trailing) | 12.4 | – |
| 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 | PSIX | QQQ |
|---|---|---|
| 2022 | +0.0% | -32.6% |
| 2023 | -31.7% | +54.9% |
| 2024 | +1351.2% | +25.6% |
| 2025 | +92.1% | +20.8% |
| 2026 | -33.9% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PSIX and QQQ good diversifiers for each other?
Reasonably. At 0.35, PSIX and QQQ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between PSIX and QQQ?
Using weekly returns as of 2026-08-27: 0.35 over 3 years, with 0.40 over the last year and 0.17 over 5 years.
Is QQQ a good diversifier for PSIX?
Reasonably. At 0.35, PSIX and QQQ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.35 mean?
On the −1 to +1 scale, 0.35 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
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Related comparisons
Hubs: PSIX correlations · QQQ correlations
