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BSRR vs PLOW: Correlation

Sierra Bancorp (BSRR) and Douglas Dynamics, Inc. (PLOW) show a moderate relationship: their 3-year correlation of weekly returns is 0.58.

Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology

Correlation (3Y)
0.58
moderate
Correlation (1Y)
0.41
last 12 months
Correlation (5Y)
0.56
long-run
Ann. covariance
603.7
%² · weekly, annualized

How correlated are BSRR and PLOW?

Across a 3-year window, the weekly returns of BSRR and PLOW correlate at 0.58, moderate. The past 12 months show a weaker link (0.41) than the 3-year average (0.58). Stretching to 5 years gives 0.56, with an annualized covariance of 603.7 %².

By 3-year correlation, PLOW places #7 of the 14 assets tracked against BSRR. Neither side won the trailing year by much: +32.6% against +28.2%.

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.

BSRR vs PLOW: side by side

BSRR (Sierra Bancorp)PLOW (Douglas Dynamics, Inc.)
1-year return+32.6%+28.2%
5-year return+91.2%+30.5%
Volatility (ann.)31.7%32.7%
Beta vs S&P 5000.830.55
Max drawdown (3Y)-29.1%-29.6%
Market cap$0.5B$1.0B
P/E (trailing)11.718.9
Dividend yield2.63%2.83%
Sector / categoryUS ListedUS Listed
Lower P/E: BSRR 11.7 vs 18.9Higher yield: PLOW 2.83% vs 2.63%Smaller drawdown: BSRR -29.1% vs -29.6%Higher 5y return: BSRR +91.2% vs +30.5%
-11%0%+66%2025-09-052026-08-27
Price paths over the last 12 months, both indexed to 100 at the start (weekly closes). BSRR · PLOW

Year-by-year returns

YearBSRRPLOW
2022-18.6%-4.0%
2023+11.5%-14.7%
2024+33.3%-16.5%
2025+17.0%+43.8%
2026+24.4%+30.9%

Calendar-year price returns; the current year is year-to-date as of the data date above.

Are BSRR and PLOW good diversifiers for each other?

Somewhat, no more. With 0.58 correlation, most large moves hit both names, and the diversification benefit stays modest.

FAQ

What is the correlation between BSRR and PLOW?

As of 2026-08-27, the correlation of weekly returns between BSRR and PLOW is 0.58 over 3 years, 0.41 over 1 year and 0.56 over 5 years.

Is PLOW a good diversifier for BSRR?

Somewhat, no more. With 0.58 correlation, most large moves hit both names, and the diversification benefit stays modest.

What does a correlation of 0.58 mean?

A reading of 0.58 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.

Use this data

JSON API · no key required
$ curl https://www.pairbook.io/api/v1/pairs/bsrr-vs-plow.json

BSRR vs PLOW: 3-year weekly correlation 0.58BSRR vs PLOW0.58

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Related comparisons

Hubs: BSRR correlations · PLOW correlations