EXR vs RNTX: Correlation
Extra Space Storage (EXR) and Rein Therapeutics, Inc. (RNTX) show a moderate relationship: their 3-year correlation of weekly returns is 0.35.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are EXR and RNTX?
Across a 3-year window, the weekly returns of EXR and RNTX correlate at 0.35, moderate. The past 12 months show a weaker link (0.06) than the 3-year average (0.35). Stretching to 5 years gives 0.23, with an annualized covariance of 896.9 %².
By 3-year correlation, RNTX places #21 of the 33 assets tracked against EXR. Correlation aside, the last 12 months split them widely, with EXR ahead by 34.4 points (+5.6% versus -28.8%). One caveat on sizing: RNTX is 3.8 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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.
EXR vs RNTX: side by side
| EXR (Extra Space Storage) | RNTX (Rein Therapeutics, Inc.) | |
|---|---|---|
| 1-year return | +5.6% | -28.8% |
| 5-year return | -6.1% | -96.4% |
| Volatility (ann.) | 26.0% | 98.8% |
| Beta vs S&P 500 | 0.68 | 1.78 |
| Max drawdown (3Y) | -29.4% | -89.7% |
| Market cap | $31.5B | $0.1B |
| P/E (trailing) | 31.6 | – |
| Dividend yield | 4.50% | 0.00% |
| Sector / category | Real Estate | US Listed |
Year-by-year returns
| Year | EXR | RNTX |
|---|---|---|
| 2022 | -32.8% | -79.0% |
| 2023 | +13.9% | +28.6% |
| 2024 | -2.8% | -24.6% |
| 2025 | -8.9% | -49.6% |
| 2026 | +12.1% | -32.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are EXR and RNTX good diversifiers for each other?
Reasonably. At 0.35, EXR and RNTX keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between EXR and RNTX?
Using weekly returns as of 2026-08-27: 0.35 over 3 years, with 0.06 over the last year and 0.23 over 5 years.
Is RNTX a good diversifier for EXR?
Reasonably. At 0.35, EXR and RNTX keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.35 mean?
On the −1 to +1 scale, 0.35 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/exr-vs-rntx.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/exr-vs-rntx/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: EXR correlations · RNTX correlations
