ASYS vs ENSG: Correlation
How closely do Amtech Systems, Inc. (ASYS) and The Ensign Group, Inc. (ENSG) trade together? Their weekly returns over three years give a correlation of -0.26, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ASYS and ENSG?
On 3 years of weekly data the ASYS/ENSG correlation comes out at -0.26, negative, meaning they tend to move in opposite directions. The past 12 months show a weaker link (-0.56) than the 3-year average (-0.26). The 5-year figure is -0.02, and annualized covariance runs at -453.0 %².
ENSG is close to the least connected end of ASYS's tracked universe, ranking #10 of 10. Correlation aside, the last 12 months split them widely, with ASYS ahead by 164.3 points (+165.2% versus +0.9%). One caveat on sizing: ASYS is 3.0 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.
ASYS vs ENSG: side by side
| ASYS (Amtech Systems, Inc.) | ENSG (The Ensign Group, Inc.) | |
|---|---|---|
| 1-year return | +165.2% | +0.9% |
| 5-year return | +54.0% | +115.6% |
| Volatility (ann.) | 71.9% | 23.8% |
| Beta vs S&P 500 | 0.92 | 0.22 |
| Max drawdown (3Y) | -61.3% | -31.8% |
| Market cap | $0.3B | $10.1B |
| P/E (trailing) | 56.5 | 28.4 |
| Dividend yield | 0.00% | 0.14% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ASYS | ENSG |
|---|---|---|
| 2022 | -23.1% | +13.0% |
| 2023 | -44.7% | +18.9% |
| 2024 | +29.8% | +18.6% |
| 2025 | +130.3% | +31.3% |
| 2026 | +26.1% | -0.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ASYS and ENSG good diversifiers for each other?
Yes: at -0.26, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between ASYS and ENSG?
The ASYS/ENSG correlation stands at -0.26 on a 3-year window (1 year: -0.56, 5 years: -0.02), computed from weekly returns as of 2026-08-27.
Is ENSG a good diversifier for ASYS?
Yes: at -0.26, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.26 mean?
On the −1 to +1 scale, -0.26 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/asys-vs-ensg.json
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Related comparisons
Hubs: ASYS correlations · ENSG correlations
