AYI vs ESP: Correlation
Acuity Inc. (AYI) and Espey Mfg. & Electronics Corp. (ESP) show a moderate relationship: their 3-year correlation of weekly returns is 0.38.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AYI and ESP?
Across a 3-year window, the weekly returns of AYI and ESP correlate at 0.38, moderate. The relationship has been stable: the 1-year correlation (0.36) sits close to the 3-year figure. Stretching to 5 years gives 0.26, with an annualized covariance of 478.1 %².
Among the 12 assets we track against AYI, ESP sits near the bottom by co-movement, at rank #8. The last year tells two different stories: ESP led by 37.1 percentage points, +2.6% for AYI against +39.7% for ESP.
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.
AYI vs ESP: side by side
| AYI (Acuity Inc.) | ESP (Espey Mfg. & Electronics Corp.) | |
|---|---|---|
| 1-year return | +2.6% | +39.7% |
| 5-year return | +86.6% | +393.3% |
| Volatility (ann.) | 30.1% | 42.3% |
| Beta vs S&P 500 | 1.13 | 0.97 |
| Max drawdown (3Y) | -33.7% | -29.1% |
| Market cap | $10.2B | – |
| P/E (trailing) | 22.7 | 16.6 |
| Dividend yield | 0.22% | 2.78% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | AYI | ESP |
|---|---|---|
| 2022 | -21.5% | -0.1% |
| 2023 | +24.1% | +35.5% |
| 2024 | +42.9% | +66.8% |
| 2025 | +23.5% | +63.3% |
| 2026 | -4.9% | +35.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AYI and ESP good diversifiers for each other?
Reasonably. At 0.38, AYI and ESP keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between AYI and ESP?
The AYI/ESP correlation stands at 0.38 on a 3-year window (1 year: 0.36, 5 years: 0.26), computed from weekly returns as of 2026-08-27.
Is ESP a good diversifier for AYI?
Reasonably. At 0.38, AYI and ESP keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.38 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
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Hubs: AYI correlations · ESP correlations
