LYB vs PSX: Correlation
LyondellBasell (LYB) and Phillips 66 (PSX) show a strong relationship: their 3-year correlation of weekly returns is 0.63.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are LYB and PSX?
On 3 years of weekly data the LYB/PSX correlation comes out at 0.63, strong. The relationship has been stable: the 1-year correlation (0.62) sits close to the 3-year figure. The 5-year figure is 0.62, and annualized covariance runs at 706.3 %².
Few assets follow LYB as closely as PSX, which ranks #2 of 36 tracked partners. The last year tells two different stories: PSX led by 67.1 percentage points, +19.1% for LYB against +86.2% for PSX. On a rolling one-year basis the correlation drifted between 0.52 and 0.77, a moderate band.
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.
LYB vs PSX: side by side
| LYB (LyondellBasell) | PSX (Phillips 66) | |
|---|---|---|
| 1-year return | +19.1% | +86.2% |
| 5-year return | -12.8% | +301.8% |
| Volatility (ann.) | 33.7% | 33.4% |
| Beta vs S&P 500 | 0.42 | 0.58 |
| Max drawdown (3Y) | -55.4% | -44.4% |
| Market cap | $20.4B | $96.1B |
| P/E (trailing) | – | 13.8 |
| Dividend yield | 6.58% | 2.04% |
| Sector / category | Materials | Energy |
Year-by-year returns
| Year | LYB | PSX |
|---|---|---|
| 2022 | -1.0% | +49.6% |
| 2023 | +20.7% | +33.1% |
| 2024 | -17.4% | -11.6% |
| 2025 | -36.0% | +17.5% |
| 2026 | +50.5% | +89.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are LYB and PSX good diversifiers for each other?
To a limited degree. At 0.63 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between LYB and PSX?
Using weekly returns as of 2026-08-27: 0.63 over 3 years, with 0.62 over the last year and 0.62 over 5 years.
Is PSX a good diversifier for LYB?
To a limited degree. At 0.63 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.63 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/lyb-vs-psx.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/lyb-vs-psx/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: LYB correlations · PSX correlations
