GBX vs TRN: Correlation
Greenbrier Companies, Inc. (The) (GBX) and Trinity Industries, Inc. (TRN) show a strong relationship: their 3-year correlation of weekly returns is 0.64.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are GBX and TRN?
On 3 years of weekly data the GBX/TRN correlation comes out at 0.64, strong. Little has changed lately, as the 1-year reading of 0.60 lands near the 3-year figure. The 5-year figure is 0.68, and annualized covariance runs at 868.6 %².
In GBX's tracked universe of 11 assets, TRN sits right near the top at #1. On 12-month performance TRN holds a 6.0-point edge, +0.5% against +6.5%.
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.
GBX vs TRN: side by side
| GBX (Greenbrier Companies, Inc. (The)) | TRN (Trinity Industries, Inc.) | |
|---|---|---|
| 1-year return | +0.5% | +6.5% |
| 5-year return | +19.2% | +22.0% |
| Volatility (ann.) | 36.2% | 37.5% |
| Beta vs S&P 500 | 0.71 | 0.89 |
| Max drawdown (3Y) | -43.7% | -39.6% |
| Market cap | $1.4B | $2.3B |
| P/E (trailing) | 13.6 | 7.0 |
| Dividend yield | 2.81% | 4.17% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | GBX | TRN |
|---|---|---|
| 2022 | -24.8% | +1.5% |
| 2023 | +36.3% | -6.2% |
| 2024 | +41.3% | +37.2% |
| 2025 | -21.3% | -21.5% |
| 2026 | +0.7% | +14.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are GBX and TRN good diversifiers for each other?
Only partially. A correlation of 0.64 means GBX and TRN share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between GBX and TRN?
Using weekly returns as of 2026-08-27: 0.64 over 3 years, with 0.60 over the last year and 0.68 over 5 years.
Is TRN a good diversifier for GBX?
Only partially. A correlation of 0.64 means GBX and TRN share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.64 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/gbx-vs-trn.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/gbx-vs-trn/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: GBX correlations · TRN correlations
