PairBook
HomePII › PII vs SWK

PII vs SWK: Correlation

How closely do Polaris Inc. (PII) and Stanley Black & Decker (SWK) trade together? Their weekly returns over three years give a correlation of 0.64, which is strong.

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

Correlation (3Y)
0.64
strong
Correlation (1Y)
0.61
last 12 months
Correlation (5Y)
0.63
long-run
Ann. covariance
880.2
%² · weekly, annualized

How correlated are PII and SWK?

Across a 3-year window, the weekly returns of PII and SWK correlate at 0.64, strong. Little has changed lately, as the 1-year reading of 0.61 lands near the 3-year figure. Stretching to 5 years gives 0.63, with an annualized covariance of 880.2 %².

SWK is one of the assets that tracks PII most closely: it ranks #2 out of the 15 assets we track against PII. Their recent paths diverged sharply: over the last 12 months SWK outperformed by 21.2 percentage points (+15.8% for PII against +37.0% for SWK).

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.

PII vs SWK: side by side

PII (Polaris Inc.)SWK (Stanley Black & Decker)
1-year return+15.8%+37.0%
5-year return-39.0%-39.1%
Volatility (ann.)39.0%35.4%
Beta vs S&P 5001.071.19
Max drawdown (3Y)-70.4%-48.3%
Market cap$3.6B$15.0B
P/E (trailing)24.4
Dividend yield4.24%3.33%
Sector / categoryUS ListedIndustrials
Higher yield: PII 4.24% vs 3.33%Smaller drawdown: SWK -48.3% vs -70.4%Higher 5y return: PII -39.0% vs -39.1%
-18%0%+37%2025-09-052026-08-27
Price paths over the last 12 months, both indexed to 100 at the start (weekly closes). PII · SWK

Year-by-year returns

YearPIISWK
2022-6.0%-58.9%
2023-3.8%+35.6%
2024-37.2%-15.2%
2025+15.9%-3.2%
2026+3.1%+36.5%

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

Are PII and SWK good diversifiers for each other?

Somewhat, no more. With 0.64 correlation, most large moves hit both names, and the diversification benefit stays modest.

FAQ

What is the correlation between PII and SWK?

Using weekly returns as of 2026-08-27: 0.64 over 3 years, with 0.61 over the last year and 0.63 over 5 years.

Is SWK a good diversifier for PII?

Somewhat, no more. With 0.64 correlation, most large moves hit both names, and the diversification benefit stays modest.

What does a correlation of 0.64 mean?

A reading of 0.64 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/pii-vs-swk.json

PII vs SWK: 3-year weekly correlation 0.64PII vs SWK0.64

Markdown for the live badge, attribution link included:

[![PII vs SWK correlation](https://www.pairbook.io/api/v1/badge/pii-vs-swk.svg)](https://www.pairbook.io/pair/pii-vs-swk/)

The core API is free. Terms and every endpoint in the API documentation.

Related comparisons

Hubs: PII correlations · SWK correlations