ARCB vs KNX: Correlation
How closely do ArcBest Corporation (ARCB) and Knight-Swift Transportation Holdings Inc. (KNX) trade together? Their weekly returns over three years give a correlation of 0.68, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ARCB and KNX?
On 3 years of weekly data the ARCB/KNX correlation comes out at 0.68, strong. The relationship has been stable: the 1-year correlation (0.73) sits close to the 3-year figure. The 5-year figure is 0.64, and annualized covariance runs at 1008.3 %².
Among the 18 assets we track against ARCB, KNX ranks #5 by 3-year correlation. Correlation aside, the last 12 months split them widely, with ARCB ahead by 32.3 points (+90.2% versus +57.9%).
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.
ARCB vs KNX: side by side
| ARCB (ArcBest Corporation) | KNX (Knight-Swift Transportation Holdings Inc.) | |
|---|---|---|
| 1-year return | +90.2% | +57.9% |
| 5-year return | +107.2% | +37.4% |
| Volatility (ann.) | 46.8% | 31.7% |
| Beta vs S&P 500 | 1.33 | 1.00 |
| Max drawdown (3Y) | -62.4% | -35.7% |
| Market cap | $3.1B | $11.2B |
| P/E (trailing) | 198.7 | 255.2 |
| Dividend yield | 0.35% | 1.09% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ARCB | KNX |
|---|---|---|
| 2022 | -41.2% | -13.2% |
| 2023 | +72.4% | +11.1% |
| 2024 | -22.1% | -6.9% |
| 2025 | -20.0% | +0.1% |
| 2026 | +88.1% | +32.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ARCB and KNX good diversifiers for each other?
Somewhat, no more. With 0.68 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between ARCB and KNX?
Using weekly returns as of 2026-08-27: 0.68 over 3 years, with 0.73 over the last year and 0.64 over 5 years.
Is KNX a good diversifier for ARCB?
Somewhat, no more. With 0.68 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.68 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/arcb-vs-knx.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/arcb-vs-knx/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: ARCB correlations · KNX correlations
