FIX vs IRM: Correlation
Measured on weekly returns over the past three years, Comfort Systems USA (FIX) and Iron Mountain (IRM) carry a correlation of 0.53, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are FIX and IRM?
Over the past 3 years, FIX and IRM moved with a correlation of 0.53, which is moderate. The relationship has been stable: the 1-year correlation (0.54) sits close to the 3-year figure. Over 5 years the correlation is 0.47, and the annualized covariance of weekly returns is 773.6 %².
Among the 37 assets we track against FIX, IRM ranks #19 by 3-year correlation. The last year tells two different stories: FIX led by 89.9 percentage points, +128.0% for FIX against +38.1% for IRM. The rolling one-year correlation moved between 0.31 and 0.72 over the past three years, a moderate range. Note the risk asymmetry: FIX runs 1.5 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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.
FIX vs IRM: side by side
| FIX (Comfort Systems USA) | IRM (Iron Mountain) | |
|---|---|---|
| 1-year return | +128.0% | +38.1% |
| 5-year return | +2077.9% | +219.3% |
| Volatility (ann.) | 47.4% | 30.8% |
| Beta vs S&P 500 | 1.74 | 0.96 |
| Max drawdown (3Y) | -46.0% | -39.0% |
| Market cap | $56.8B | $36.5B |
| P/E (trailing) | 39.8 | 86.4 |
| Dividend yield | 0.16% | 2.78% |
| Sector / category | Industrials | Real Estate |
Year-by-year returns
| Year | FIX | IRM |
|---|---|---|
| 2022 | +17.0% | -0.1% |
| 2023 | +79.6% | +46.5% |
| 2024 | +106.9% | +54.5% |
| 2025 | +120.9% | -18.2% |
| 2026 | +73.3% | +50.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FIX and IRM good diversifiers for each other?
Somewhat, no more. With 0.53 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between FIX and IRM?
Using weekly returns as of 2026-08-27: 0.53 over 3 years, with 0.54 over the last year and 0.47 over 5 years.
Is IRM a good diversifier for FIX?
Somewhat, no more. With 0.53 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.53 mean?
A reading of 0.53 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
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Related comparisons
Hubs: FIX correlations · IRM correlations
