AHRT vs PDM: Correlation
AH Realty Trust, Inc. (AHRT) and Piedmont Realty Trust, Inc. (PDM) show a moderate relationship: their 3-year correlation of weekly returns is 0.59.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AHRT and PDM?
Over the past 3 years, AHRT and PDM moved with a correlation of 0.59, which is moderate. Little has changed lately, as the 1-year reading of 0.58 lands near the 3-year figure. Over 5 years the correlation is 0.62, and the annualized covariance of weekly returns is 573.4 %².
By 3-year correlation, PDM places #5 of the 13 assets tracked against AHRT. Correlation aside, the last 12 months split them widely, with PDM ahead by 15.5 points (+0.5% versus +16.0%).
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.
AHRT vs PDM: side by side
| AHRT (AH Realty Trust, Inc.) | PDM (Piedmont Realty Trust, Inc.) | |
|---|---|---|
| 1-year return | +0.5% | +16.0% |
| 5-year return | -29.6% | -29.9% |
| Volatility (ann.) | 27.4% | 35.3% |
| Beta vs S&P 500 | 0.82 | 0.95 |
| Max drawdown (3Y) | -52.0% | -46.4% |
| Market cap | $0.6B | $1.2B |
| P/E (trailing) | – | – |
| Dividend yield | 8.35% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | AHRT | PDM |
|---|---|---|
| 2022 | -19.9% | -46.8% |
| 2023 | +15.0% | -14.8% |
| 2024 | -10.8% | +37.2% |
| 2025 | -30.0% | -7.3% |
| 2026 | +4.9% | +16.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AHRT and PDM good diversifiers for each other?
Somewhat, no more. With 0.59 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between AHRT and PDM?
Using weekly returns as of 2026-08-27: 0.59 over 3 years, with 0.58 over the last year and 0.62 over 5 years.
Is PDM a good diversifier for AHRT?
Somewhat, no more. With 0.59 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.59 mean?
On the −1 to +1 scale, 0.59 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/ahrt-vs-pdm.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/ahrt-vs-pdm/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: AHRT correlations · PDM correlations
