AES vs PDM: Correlation
How closely do AES Corporation (AES) and Piedmont Realty Trust, Inc. (PDM) trade together? Their weekly returns over three years give a correlation of 0.48, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AES and PDM?
Over the past 3 years, AES and PDM moved with a correlation of 0.48, which is moderate. The link has loosened recently: the 1-year correlation (0.19) runs below the 3-year figure (0.48). Over 5 years the correlation is 0.43, and the annualized covariance of weekly returns is 689.9 %².
Within AES's tracked universe of 31 assets, PDM comes in at #10 by 3-year correlation. Twelve-month performance is nearly a tie, at +15.9% for AES and +16.0% for PDM.
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.
AES vs PDM: side by side
| AES (AES Corporation) | PDM (Piedmont Realty Trust, Inc.) | |
|---|---|---|
| 1-year return | +15.9% | +16.0% |
| 5-year return | -25.1% | -29.9% |
| Volatility (ann.) | 40.5% | 35.3% |
| Beta vs S&P 500 | 0.86 | 0.95 |
| Max drawdown (3Y) | -53.3% | -46.4% |
| Market cap | $10.5B | $1.2B |
| P/E (trailing) | 5.5 | – |
| Dividend yield | 4.78% | 0.00% |
| Sector / category | Utilities | US Listed |
Year-by-year returns
| Year | AES | PDM |
|---|---|---|
| 2022 | +21.7% | -46.8% |
| 2023 | -30.9% | -14.8% |
| 2024 | -30.4% | +37.2% |
| 2025 | +18.3% | -7.3% |
| 2026 | +6.6% | +16.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AES and PDM good diversifiers for each other?
A fair diversifier. At 0.48, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between AES and PDM?
The AES/PDM correlation stands at 0.48 on a 3-year window (1 year: 0.19, 5 years: 0.43), computed from weekly returns as of 2026-08-27.
Is PDM a good diversifier for AES?
A fair diversifier. At 0.48, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.48 mean?
On the −1 to +1 scale, 0.48 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/aes-vs-pdm.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/aes-vs-pdm/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: AES correlations · PDM correlations
