KNX vs MRTN: Correlation
Measured on weekly returns over the past three years, Knight-Swift Transportation Holdings Inc. (KNX) and Marten Transport, Ltd. (MRTN) carry a correlation of 0.75, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are KNX and MRTN?
Across a 3-year window, the weekly returns of KNX and MRTN correlate at 0.75, strong. Recent behaviour matches the longer record: 0.77 over 1 year against 0.75 over 3. Stretching to 5 years gives 0.70, with an annualized covariance of 679.4 %².
By 3-year correlation, MRTN places #4 of the 17 assets tracked against KNX. Their recent paths diverged sharply: over the last 12 months KNX outperformed by 34.5 percentage points (+57.9% for KNX against +23.4% for MRTN).
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.
KNX vs MRTN: side by side
| KNX (Knight-Swift Transportation Holdings Inc.) | MRTN (Marten Transport, Ltd.) | |
|---|---|---|
| 1-year return | +57.9% | +23.4% |
| 5-year return | +37.4% | -1.0% |
| Volatility (ann.) | 31.7% | 28.6% |
| Beta vs S&P 500 | 1.00 | 0.78 |
| Max drawdown (3Y) | -35.7% | -54.8% |
| Market cap | $11.2B | $1.2B |
| P/E (trailing) | 255.2 | 96.4 |
| Dividend yield | 1.09% | 1.66% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | KNX | MRTN |
|---|---|---|
| 2022 | -13.2% | +16.7% |
| 2023 | +11.1% | +7.3% |
| 2024 | -6.9% | -24.6% |
| 2025 | +0.1% | -25.7% |
| 2026 | +32.6% | +28.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are KNX and MRTN good diversifiers for each other?
Somewhat, no more. With 0.75 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between KNX and MRTN?
The KNX/MRTN correlation stands at 0.75 on a 3-year window (1 year: 0.77, 5 years: 0.70), computed from weekly returns as of 2026-08-27.
Is MRTN a good diversifier for KNX?
Somewhat, no more. With 0.75 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.75 mean?
A reading of 0.75 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/knx-vs-mrtn.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/knx-vs-mrtn/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: KNX correlations · MRTN correlations
