FSTR vs PHIN: Correlation
How closely do L.B. Foster Company (FSTR) and PHINIA Inc. (PHIN) trade together? Their weekly returns over three years give a correlation of 0.49, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are FSTR and PHIN?
On 3 years of weekly data the FSTR/PHIN correlation comes out at 0.49, moderate. The relationship has been stable: the 1-year correlation (0.50) sits close to the 3-year figure. The 5-year figure is n/a, and annualized covariance runs at 756.1 %².
In FSTR's tracked universe of 16 assets, PHIN sits right near the top at #3. The last year tells two different stories: FSTR led by 25.9 percentage points, +42.8% for FSTR against +16.9% for PHIN.
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.
FSTR vs PHIN: side by side
| FSTR (L.B. Foster Company) | PHIN (PHINIA Inc.) | |
|---|---|---|
| 1-year return | +42.8% | +16.9% |
| 5-year return | +119.1% | n/a |
| Volatility (ann.) | 46.4% | 33.0% |
| Beta vs S&P 500 | 1.23 | 1.01 |
| Max drawdown (3Y) | -45.9% | -32.9% |
| Market cap | $0.4B | $2.5B |
| P/E (trailing) | 35.4 | 20.1 |
| Dividend yield | 0.00% | 1.63% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | FSTR | PHIN |
|---|---|---|
| 2022 | -29.6% | – |
| 2023 | +127.2% | – |
| 2024 | +22.3% | +62.7% |
| 2025 | +0.2% | +33.0% |
| 2026 | +40.4% | +9.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FSTR and PHIN good diversifiers for each other?
A fair diversifier. At 0.49, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between FSTR and PHIN?
The FSTR/PHIN correlation stands at 0.49 on a 3-year window (1 year: 0.50, 5 years: n/a), computed from weekly returns as of 2026-08-27.
Is PHIN a good diversifier for FSTR?
A fair diversifier. At 0.49, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.49 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/fstr-vs-phin.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/fstr-vs-phin/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: FSTR correlations · PHIN correlations
