COST vs UDR: Correlation
Measured on weekly returns over the past three years, Costco (COST) and UDR, Inc. (UDR) carry a correlation of 0.41, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are COST and UDR?
Across a 3-year window, the weekly returns of COST and UDR correlate at 0.41, moderate. Little has changed lately, as the 1-year reading of 0.36 lands near the 3-year figure. Stretching to 5 years gives 0.47, with an annualized covariance of 172.7 %².
By 3-year correlation, UDR places #6 of the 33 assets tracked against COST. Their 12-month results are close: -1.0% for COST against -0.6% for UDR. The rolling one-year correlation moved between 0.28 and 0.55 over the past three years, a moderate range.
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.
COST vs UDR: side by side
| COST (Costco) | UDR (UDR, Inc.) | |
|---|---|---|
| 1-year return | -1.0% | -0.6% |
| 5-year return | +116.3% | -15.5% |
| Volatility (ann.) | 19.8% | 21.1% |
| Beta vs S&P 500 | 0.45 | 0.54 |
| Max drawdown (3Y) | -20.7% | -24.9% |
| Market cap | $414.5B | $13.6B |
| P/E (trailing) | 48.1 | 23.9 |
| Dividend yield | 0.56% | 4.56% |
| Sector / category | Consumer Staples | Real Estate |
Year-by-year returns
| Year | COST | UDR |
|---|---|---|
| 2022 | -19.0% | -33.4% |
| 2023 | +49.0% | +3.1% |
| 2024 | +39.6% | +18.3% |
| 2025 | -5.4% | -11.8% |
| 2026 | +8.9% | +4.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are COST and UDR good diversifiers for each other?
A fair diversifier. At 0.41, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between COST and UDR?
Using weekly returns as of 2026-08-27: 0.41 over 3 years, with 0.36 over the last year and 0.47 over 5 years.
Is UDR a good diversifier for COST?
A fair diversifier. At 0.41, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.41 mean?
On the −1 to +1 scale, 0.41 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/cost-vs-udr.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/cost-vs-udr/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: COST correlations · UDR correlations
