BIRK vs SAM: Correlation
Measured on weekly returns over the past three years, Birkenstock Holding plc (BIRK) and Boston Beer Company, Inc. (The) (SAM) carry a correlation of 0.43, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BIRK and SAM?
On 3 years of weekly data the BIRK/SAM correlation comes out at 0.43, moderate. Little has changed lately, as the 1-year reading of 0.46 lands near the 3-year figure. The 5-year figure is n/a, and annualized covariance runs at 696.1 %².
Among the 15 assets we track against BIRK, SAM ranks #9 by 3-year correlation. The trailing year gives SAM the advantage: -32.3% versus -17.6%, a 14.7-point spread.
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.
BIRK vs SAM: side by side
| BIRK (Birkenstock Holding plc) | SAM (Boston Beer Company, Inc. (The)) | |
|---|---|---|
| 1-year return | -32.3% | -17.6% |
| 5-year return | n/a | -68.3% |
| Volatility (ann.) | 45.5% | 35.3% |
| Beta vs S&P 500 | 1.18 | 0.21 |
| Max drawdown (3Y) | -50.9% | -59.1% |
| Market cap | $5.8B | $1.9B |
| P/E (trailing) | 17.0 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BIRK | SAM |
|---|---|---|
| 2022 | – | -34.8% |
| 2023 | – | +4.9% |
| 2024 | +16.3% | -13.2% |
| 2025 | -27.8% | -35.0% |
| 2026 | -13.7% | -6.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BIRK and SAM good diversifiers for each other?
Reasonably. At 0.43, BIRK and SAM keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between BIRK and SAM?
As of 2026-08-27, the correlation of weekly returns between BIRK and SAM is 0.43 over 3 years, 0.46 over 1 year and n/a over 5 years.
Is SAM a good diversifier for BIRK?
Reasonably. At 0.43, BIRK and SAM keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.43 mean?
On the −1 to +1 scale, 0.43 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/birk-vs-sam.json
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Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: BIRK correlations · SAM correlations
