PSO vs QQQ: Correlation
Measured on weekly returns over the past three years, Pearson, Plc (PSO) and Invesco QQQ Trust (QQQ) carry a correlation of 0.16, a weak link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PSO and QQQ?
Over the past 3 years, PSO and QQQ moved with a correlation of 0.16, which is weak. The relationship has been stable: the 1-year correlation (0.15) sits close to the 3-year figure. Over 5 years the correlation is 0.18, and the annualized covariance of weekly returns is 67.1 %².
Among the 10 assets we track against PSO, QQQ sits near the bottom by co-movement, at rank #7. The trailing year gives QQQ the advantage: +15.6% versus +26.3%, a 10.7-point spread.
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.
PSO vs QQQ: side by side
| PSO (Pearson, Plc) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | +15.6% | +26.3% |
| 5-year return | +77.5% | +95.4% |
| Volatility (ann.) | 22.1% | 19.6% |
| Beta vs S&P 500 | 0.31 | 1.28 |
| Max drawdown (3Y) | -30.7% | -22.8% |
| Market cap | $10.0B | – |
| P/E (trailing) | 24.1 | – |
| Dividend yield | 1.56% | 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 | PSO | QQQ |
|---|---|---|
| 2022 | +37.7% | -32.6% |
| 2023 | +12.0% | +54.9% |
| 2024 | +34.2% | +25.6% |
| 2025 | -11.2% | +20.8% |
| 2026 | +21.6% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PSO and QQQ good diversifiers for each other?
Yes. With a correlation of 0.16, PSO and QQQ have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between PSO and QQQ?
Using weekly returns as of 2026-08-27: 0.16 over 3 years, with 0.15 over the last year and 0.18 over 5 years.
Is QQQ a good diversifier for PSO?
Yes. With a correlation of 0.16, PSO and QQQ have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of 0.16 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.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/pso-vs-qqq.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/pso-vs-qqq/)
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Related comparisons
Hubs: PSO correlations · QQQ correlations
