PSX vs SMTK: Correlation
Phillips 66 (PSX) and SmartKem, Inc. (SMTK) show a negative relationship: their 3-year correlation of weekly returns is -0.20.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PSX and SMTK?
On 3 years of weekly data the PSX/SMTK correlation comes out at -0.20, negative, meaning they tend to move in opposite directions. Recent behaviour matches the longer record: -0.29 over 1 year against -0.20 over 3. The 5-year figure is n/a, and annualized covariance runs at -1110.0 %².
Out of 34 assets tracked against PSX, SMTK lands near the bottom at #31. Correlation aside, the last 12 months split them widely, with PSX ahead by 175.3 points (+86.2% versus -89.1%). Note the risk asymmetry: SMTK runs 4.7 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.
PSX vs SMTK: side by side
| PSX (Phillips 66) | SMTK (SmartKem, Inc.) | |
|---|---|---|
| 1-year return | +86.2% | -89.1% |
| 5-year return | +301.8% | n/a |
| Volatility (ann.) | 33.4% | 155.8% |
| Beta vs S&P 500 | 0.58 | -0.16 |
| Max drawdown (3Y) | -44.4% | -99.2% |
| Market cap | $96.1B | – |
| P/E (trailing) | 13.8 | – |
| Dividend yield | 2.04% | 0.00% |
| Sector / category | Energy | US Listed |
Year-by-year returns
| Year | PSX | SMTK |
|---|---|---|
| 2022 | +49.6% | – |
| 2023 | +33.1% | – |
| 2024 | -11.6% | – |
| 2025 | +17.5% | -63.3% |
| 2026 | +89.7% | -93.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PSX and SMTK good diversifiers for each other?
By historical standards, yes. A correlation of -0.20 means the two rarely move for the same reasons.
FAQ
What is the correlation between PSX and SMTK?
The PSX/SMTK correlation stands at -0.20 on a 3-year window (1 year: -0.29, 5 years: n/a), computed from weekly returns as of 2026-08-27.
Is SMTK a good diversifier for PSX?
By historical standards, yes. A correlation of -0.20 means the two rarely move for the same reasons.
What does a correlation of -0.20 mean?
On the −1 to +1 scale, -0.20 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-smtk.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/psx-vs-smtk/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: PSX correlations · SMTK correlations
