PSX vs QQQ: Correlation
Phillips 66 (PSX) and Invesco QQQ Trust (QQQ) show a weak relationship: their 3-year correlation of weekly returns is 0.13.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PSX and QQQ?
Across a 3-year window, the weekly returns of PSX and QQQ correlate at 0.13, weak. The link has loosened recently: the 1-year correlation (-0.34) runs below the 3-year figure (0.13). Stretching to 5 years gives 0.12, with an annualized covariance of 82.2 %².
Among the 34 assets we track against PSX, QQQ ranks #24 by 3-year correlation. The last year tells two different stories: PSX led by 59.9 percentage points, +86.2% for PSX against +26.3% for QQQ. The relationship is regime-dependent: the rolling one-year correlation swung between -0.38 and 0.57 over the past three years, so this pair behaves very differently depending on the market environment. One caveat on sizing: PSX is 1.7 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.
PSX vs QQQ: side by side
| PSX (Phillips 66) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | +86.2% | +26.3% |
| 5-year return | +301.8% | +95.4% |
| Volatility (ann.) | 33.4% | 19.6% |
| Beta vs S&P 500 | 0.58 | 1.28 |
| Max drawdown (3Y) | -44.4% | -22.8% |
| Market cap | $96.1B | – |
| P/E (trailing) | 13.8 | – |
| Dividend yield | 2.04% | 0.44% |
| Expense ratio | – | 0.18% |
| Assets under management | – | $452.8B |
| Sector / category | Energy | 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 | PSX | QQQ |
|---|---|---|
| 2022 | +49.6% | -32.6% |
| 2023 | +33.1% | +54.9% |
| 2024 | -11.6% | +25.6% |
| 2025 | +17.5% | +20.8% |
| 2026 | +89.7% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PSX and QQQ good diversifiers for each other?
Yes. With a correlation of 0.13, PSX and QQQ have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between PSX and QQQ?
Using weekly returns as of 2026-08-27: 0.13 over 3 years, with -0.34 over the last year and 0.12 over 5 years.
Is QQQ a good diversifier for PSX?
Yes. With a correlation of 0.13, PSX and QQQ have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of 0.13 mean?
On the −1 to +1 scale, 0.13 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
$ curl https://www.pairbook.io/api/v1/pairs/psx-vs-qqq.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/psx-vs-qqq/)
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Related comparisons
Hubs: PSX correlations · QQQ correlations
