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SXI vs WTS: Correlation

How closely do Standex International Corporation (SXI) and Watts Water Technologies, Inc. (WTS) trade together? Their weekly returns over three years give a correlation of 0.61, which is strong.

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

Correlation (3Y)
0.61
strong
Correlation (1Y)
0.72
last 12 months
Correlation (5Y)
0.61
long-run
Ann. covariance
497.1
%² · weekly, annualized

How correlated are SXI and WTS?

On 3 years of weekly data the SXI/WTS correlation comes out at 0.61, strong. The link has tightened recently: the 1-year correlation (0.72) runs above the 3-year figure (0.61). The 5-year figure is 0.61, and annualized covariance runs at 497.1 %².

Within SXI's tracked universe of 12 assets, WTS comes in at #5 by 3-year correlation. Over the last 12 months SXI came out ahead by 12.6 percentage points (+44.5% against +31.9%).

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.

SXI vs WTS: side by side

SXI (Standex International Corporation)WTS (Watts Water Technologies, Inc.)
1-year return+44.5%+31.9%
5-year return+218.6%+125.4%
Volatility (ann.)33.0%24.6%
Beta vs S&P 5001.040.89
Max drawdown (3Y)-38.0%-19.5%
Market cap$3.7B$12.4B
P/E (trailing)35.232.5
Dividend yield0.44%0.58%
Sector / categoryUS ListedUS Listed
Lower P/E: WTS 32.5 vs 35.2Higher yield: WTS 0.58% vs 0.44%Smaller drawdown: WTS -19.5% vs -38.0%Higher 5y return: SXI +218.6% vs +125.4%
-5%0%+64%2025-09-052026-08-27
Price paths over the last 12 months, both indexed to 100 at the start (weekly closes). SXI · WTS

Year-by-year returns

YearSXIWTS
2022-6.5%-24.1%
2023+56.0%+43.6%
2024+18.9%-1.6%
2025+17.0%+36.8%
2026+40.0%+35.4%

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

Are SXI and WTS good diversifiers for each other?

To a limited degree. At 0.61 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.

FAQ

What is the correlation between SXI and WTS?

Using weekly returns as of 2026-08-27: 0.61 over 3 years, with 0.72 over the last year and 0.61 over 5 years.

Is WTS a good diversifier for SXI?

To a limited degree. At 0.61 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.

What does a correlation of 0.61 mean?

A reading of 0.61 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/sxi-vs-wts.json

SXI vs WTS: 3-year weekly correlation 0.61SXI vs WTS0.61

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Related comparisons

Hubs: SXI correlations · WTS correlations