APT vs EMBC: Correlation
Alpha Pro Tech, Ltd. (APT) and Embecta Corp. (EMBC) show a negative relationship: their 3-year correlation of weekly returns is -0.31.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are APT and EMBC?
Across a 3-year window, the weekly returns of APT and EMBC correlate at -0.31, negative, meaning they tend to move in opposite directions. Lately the two have drifted apart, with the 1-year correlation at -0.49 versus -0.31 over 3 years. Stretching to 5 years gives -0.26, with an annualized covariance of -952.0 %².
Among the 12 assets we track against APT, EMBC sits near the bottom by co-movement, at rank #12. Correlation aside, the last 12 months split them widely, with APT ahead by 77.3 points (+12.8% versus -64.5%). One caveat on sizing: EMBC is 1.7 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.
APT vs EMBC: side by side
| APT (Alpha Pro Tech, Ltd.) | EMBC (Embecta Corp.) | |
|---|---|---|
| 1-year return | +12.8% | -64.5% |
| 5-year return | -33.5% | -87.8% |
| Volatility (ann.) | 42.0% | 72.4% |
| Beta vs S&P 500 | 0.65 | 0.91 |
| Max drawdown (3Y) | -39.0% | -85.3% |
| Market cap | $0.1B | $0.3B |
| P/E (trailing) | 14.0 | 3.4 |
| Dividend yield | 0.00% | 9.29% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | APT | EMBC |
|---|---|---|
| 2022 | -32.7% | – |
| 2023 | +31.6% | -23.1% |
| 2024 | +0.0% | +13.6% |
| 2025 | -16.1% | -39.6% |
| 2026 | +23.2% | -57.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are APT and EMBC good diversifiers for each other?
Yes: at -0.31, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between APT and EMBC?
The APT/EMBC correlation stands at -0.31 on a 3-year window (1 year: -0.49, 5 years: -0.26), computed from weekly returns as of 2026-08-27.
Is EMBC a good diversifier for APT?
Yes: at -0.31, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.31 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.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/apt-vs-embc.json
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Related comparisons
Hubs: APT correlations · EMBC correlations
