APT vs WFCF: Correlation
How closely do Alpha Pro Tech, Ltd. (APT) and Where Food Comes From, Inc. (WFCF) trade together? Their weekly returns over three years give a correlation of 0.45, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are APT and WFCF?
Over the past 3 years, APT and WFCF moved with a correlation of 0.45, which is moderate. The link has tightened recently: the 1-year correlation (0.70) runs above the 3-year figure (0.45). Over 5 years the correlation is 0.34, and the annualized covariance of weekly returns is 1077.1 %².
Within APT's tracked universe of 12 assets, WFCF comes in at #5 by 3-year correlation. Neither side won the trailing year by much: +12.8% against +10.4%.
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 WFCF: side by side
| APT (Alpha Pro Tech, Ltd.) | WFCF (Where Food Comes From, Inc.) | |
|---|---|---|
| 1-year return | +12.8% | +10.4% |
| 5-year return | -33.5% | +0.4% |
| Volatility (ann.) | 42.0% | 57.1% |
| Beta vs S&P 500 | 0.65 | 0.27 |
| Max drawdown (3Y) | -39.0% | -49.1% |
| Market cap | $0.1B | $0.1B |
| P/E (trailing) | 14.0 | 45.7 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | APT | WFCF |
|---|---|---|
| 2022 | -32.7% | -3.7% |
| 2023 | +31.6% | -3.0% |
| 2024 | +0.0% | -2.3% |
| 2025 | -16.1% | -13.2% |
| 2026 | +23.2% | +15.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are APT and WFCF good diversifiers for each other?
A fair diversifier. At 0.45, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between APT and WFCF?
Using weekly returns as of 2026-08-27: 0.45 over 3 years, with 0.70 over the last year and 0.34 over 5 years.
Is WFCF a good diversifier for APT?
A fair diversifier. At 0.45, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.45 mean?
On the −1 to +1 scale, 0.45 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/apt-vs-wfcf.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/apt-vs-wfcf/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: APT correlations · WFCF correlations
