GLW vs MUSA: Correlation
Corning Inc. (GLW) and Murphy USA Inc. (MUSA) show a negative relationship: their 3-year correlation of weekly returns is -0.28.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are GLW and MUSA?
Over the past 3 years, GLW and MUSA moved with a correlation of -0.28, which is negative, meaning they tend to move in opposite directions. Lately the two have drifted apart, with the 1-year correlation at -0.45 versus -0.28 over 3 years. Over 5 years the correlation is -0.13, and the annualized covariance of weekly returns is -401.4 %².
Among the 37 assets we track against GLW, MUSA sits near the bottom by co-movement, at rank #33. Correlation aside, the last 12 months split them widely, with GLW ahead by 94.4 points (+129.7% versus +35.3%).
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.
GLW vs MUSA: side by side
| GLW (Corning Inc.) | MUSA (Murphy USA Inc.) | |
|---|---|---|
| 1-year return | +129.7% | +35.3% |
| 5-year return | +331.4% | +234.8% |
| Volatility (ann.) | 42.1% | 33.7% |
| Beta vs S&P 500 | 1.15 | 0.06 |
| Max drawdown (3Y) | -51.5% | -35.5% |
| Market cap | $131.6B | $9.4B |
| P/E (trailing) | 70.4 | 16.3 |
| Dividend yield | 0.73% | 0.46% |
| Sector / category | Information Technology | US Listed |
Year-by-year returns
| Year | GLW | MUSA |
|---|---|---|
| 2022 | -11.6% | +41.0% |
| 2023 | -1.2% | +28.2% |
| 2024 | +60.6% | +41.3% |
| 2025 | +87.8% | -19.1% |
| 2026 | +75.1% | +26.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are GLW and MUSA good diversifiers for each other?
By historical standards, yes. A correlation of -0.28 means the two rarely move for the same reasons.
FAQ
What is the correlation between GLW and MUSA?
Using weekly returns as of 2026-08-27: -0.28 over 3 years, with -0.45 over the last year and -0.13 over 5 years.
Is MUSA a good diversifier for GLW?
By historical standards, yes. A correlation of -0.28 means the two rarely move for the same reasons.
What does a correlation of -0.28 mean?
A reading of -0.28 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/glw-vs-musa.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/glw-vs-musa/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: GLW correlations · MUSA correlations
