PCG vs SRE: Correlation
Measured on weekly returns over the past three years, PG&E Corporation (PCG) and Sempra (SRE) carry a correlation of 0.55, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PCG and SRE?
Across a 3-year window, the weekly returns of PCG and SRE correlate at 0.55, moderate. The relationship has been stable: the 1-year correlation (0.65) sits close to the 3-year figure. Stretching to 5 years gives 0.47, with an annualized covariance of 325.9 %².
Within PCG's tracked universe of 30 assets, SRE comes in at #6 by 3-year correlation. Over the last 12 months PCG came out ahead by 14.3 percentage points (+20.3% against +6.0%). On a rolling one-year basis the correlation drifted between 0.35 and 0.78, 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.
PCG vs SRE: side by side
| PCG (PG&E Corporation) | SRE (Sempra) | |
|---|---|---|
| 1-year return | +20.3% | +6.0% |
| 5-year return | +102.7% | +50.4% |
| Volatility (ann.) | 24.7% | 23.9% |
| Beta vs S&P 500 | 0.24 | 0.38 |
| Max drawdown (3Y) | -39.6% | -31.6% |
| Market cap | $39.5B | $55.4B |
| P/E (trailing) | 12.9 | 24.7 |
| Dividend yield | 0.96% | 3.06% |
| Sector / category | Utilities | Utilities |
Year-by-year returns
| Year | PCG | SRE |
|---|---|---|
| 2022 | +33.9% | +20.3% |
| 2023 | +10.9% | -0.1% |
| 2024 | +12.3% | +21.1% |
| 2025 | -19.7% | +3.9% |
| 2026 | +12.3% | -2.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PCG and SRE good diversifiers for each other?
Somewhat, no more. With 0.55 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between PCG and SRE?
The PCG/SRE correlation stands at 0.55 on a 3-year window (1 year: 0.65, 5 years: 0.47), computed from weekly returns as of 2026-08-27.
Is SRE a good diversifier for PCG?
Somewhat, no more. With 0.55 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.55 mean?
On the −1 to +1 scale, 0.55 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/pcg-vs-sre.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/pcg-vs-sre/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: PCG correlations · SRE correlations
