ACM vs XLI: Correlation
How closely do AECOM (ACM) and Industrial Select Sector SPDR Fund (XLI) trade together? Their weekly returns over three years give a correlation of 0.47, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACM and XLI?
Across a 3-year window, the weekly returns of ACM and XLI correlate at 0.47, moderate. Lately the two have drifted apart, with the 1-year correlation at 0.25 versus 0.47 over 3 years. Stretching to 5 years gives 0.54, with an annualized covariance of 213.2 %².
Among the 16 assets we track against ACM, XLI ranks #4 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months XLI outperformed by 64.9 percentage points (-46.6% for ACM against +18.3% for XLI). One caveat on sizing: ACM is 1.9 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.
ACM vs XLI: side by side
| ACM (AECOM) | XLI (Industrial Select Sector SPDR Fund) | |
|---|---|---|
| 1-year return | -46.6% | +18.3% |
| 5-year return | +5.2% | +84.0% |
| Volatility (ann.) | 29.1% | 15.7% |
| Beta vs S&P 500 | 0.79 | 0.89 |
| Max drawdown (3Y) | -54.1% | -18.5% |
| Market cap | $8.5B | – |
| P/E (trailing) | 22.9 | – |
| Dividend yield | 1.83% | 1.15% |
| Expense ratio | – | 0.08% |
| Assets under management | – | $32.9B |
| Sector / category | US Listed | Sector ETF |
XLI is an Industrials fund from State Street Investment Management: $32.9B under management, 83 holdings, a 0.08% expense ratio, a 1.15% trailing dividend yield.
Year-by-year returns
| Year | ACM | XLI |
|---|---|---|
| 2022 | +10.7% | -5.6% |
| 2023 | +9.8% | +18.1% |
| 2024 | +16.7% | +17.3% |
| 2025 | -9.9% | +19.3% |
| 2026 | -29.7% | +15.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACM and XLI good diversifiers for each other?
A fair diversifier. At 0.47, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between ACM and XLI?
As of 2026-08-27, the correlation of weekly returns between ACM and XLI is 0.47 over 3 years, 0.25 over 1 year and 0.54 over 5 years.
Is XLI a good diversifier for ACM?
A fair diversifier. At 0.47, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.47 mean?
On the −1 to +1 scale, 0.47 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/acm-vs-xli.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/acm-vs-xli/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ACM correlations · XLI correlations
