PLPC vs SXI: Correlation
How closely do Preformed Line Products Company (PLPC) and Standex International Corporation (SXI) trade together? Their weekly returns over three years give a correlation of 0.48, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PLPC and SXI?
Across a 3-year window, the weekly returns of PLPC and SXI correlate at 0.48, moderate. Lately the two have moved closer together, with the 1-year correlation at 0.64 versus 0.48 over 3 years. Stretching to 5 years gives 0.43, with an annualized covariance of 674.9 %².
Few assets follow PLPC as closely as SXI, which ranks #3 of 10 tracked partners. Their recent paths diverged sharply: over the last 12 months PLPC outperformed by 76.9 percentage points (+121.4% for PLPC against +44.5% for SXI).
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.
PLPC vs SXI: side by side
| PLPC (Preformed Line Products Company) | SXI (Standex International Corporation) | |
|---|---|---|
| 1-year return | +121.4% | +44.5% |
| 5-year return | +514.6% | +218.6% |
| Volatility (ann.) | 42.3% | 33.0% |
| Beta vs S&P 500 | 0.76 | 1.04 |
| Max drawdown (3Y) | -38.5% | -38.0% |
| Market cap | $2.1B | $3.7B |
| P/E (trailing) | 46.4 | 35.2 |
| Dividend yield | 0.20% | 0.44% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | PLPC | SXI |
|---|---|---|
| 2022 | +29.9% | -6.5% |
| 2023 | +61.8% | +56.0% |
| 2024 | -3.9% | +18.9% |
| 2025 | +62.6% | +17.0% |
| 2026 | +104.1% | +40.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PLPC and SXI good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.48 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between PLPC and SXI?
Using weekly returns as of 2026-08-27: 0.48 over 3 years, with 0.64 over the last year and 0.43 over 5 years.
Is SXI a good diversifier for PLPC?
Yes, to a useful degree: a correlation of 0.48 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.48 mean?
A reading of 0.48 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
$ curl https://www.pairbook.io/api/v1/pairs/plpc-vs-sxi.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/plpc-vs-sxi/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: PLPC correlations · SXI correlations
