EIX vs POR: Correlation
How closely do Edison International (EIX) and Portland General Electric Co (POR) trade together? Their weekly returns over three years give a correlation of 0.61, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are EIX and POR?
Across a 3-year window, the weekly returns of EIX and POR correlate at 0.61, strong. Recent behaviour matches the longer record: 0.61 over 1 year against 0.61 over 3. Stretching to 5 years gives 0.62, with an annualized covariance of 290.9 %².
Few assets follow EIX as closely as POR, which ranks #2 of 30 tracked partners. Their recent paths diverged sharply: over the last 12 months EIX outperformed by 19.4 percentage points (+40.4% for EIX against +21.0% for POR).
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.
EIX vs POR: side by side
| EIX (Edison International) | POR (Portland General Electric Co) | |
|---|---|---|
| 1-year return | +40.4% | +21.0% |
| 5-year return | +62.2% | +20.7% |
| Volatility (ann.) | 26.0% | 18.5% |
| Beta vs S&P 500 | 0.24 | 0.10 |
| Max drawdown (3Y) | -43.9% | -16.3% |
| Market cap | $28.4B | $5.9B |
| P/E (trailing) | 7.7 | 22.2 |
| Dividend yield | 4.64% | 4.24% |
| Sector / category | Utilities | US Listed |
Year-by-year returns
| Year | EIX | POR |
|---|---|---|
| 2022 | -2.6% | -4.0% |
| 2023 | +17.4% | -7.7% |
| 2024 | +15.2% | +5.3% |
| 2025 | -20.4% | +15.4% |
| 2026 | +27.6% | +6.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are EIX and POR good diversifiers for each other?
Somewhat, no more. With 0.61 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between EIX and POR?
Using weekly returns as of 2026-08-27: 0.61 over 3 years, with 0.61 over the last year and 0.62 over 5 years.
Is POR a good diversifier for EIX?
Somewhat, no more. With 0.61 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.61 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/eix-vs-por.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/eix-vs-por/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: EIX correlations · POR correlations
