GLW vs MTRN: Correlation
How closely do Corning Inc. (GLW) and Materion Corporation (MTRN) trade together? Their weekly returns over three years give a correlation of 0.55, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are GLW and MTRN?
Across a 3-year window, the weekly returns of GLW and MTRN correlate at 0.55, moderate. Recent behaviour matches the longer record: 0.60 over 1 year against 0.55 over 3. Stretching to 5 years gives 0.48, with an annualized covariance of 1065.7 %².
By 3-year correlation, MTRN places #6 of the 37 assets tracked against GLW. Over the last 12 months GLW came out ahead by 6.1 percentage points (+129.7% against +123.6%).
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 MTRN: side by side
| GLW (Corning Inc.) | MTRN (Materion Corporation) | |
|---|---|---|
| 1-year return | +129.7% | +123.6% |
| 5-year return | +331.4% | +248.3% |
| Volatility (ann.) | 42.1% | 45.7% |
| Beta vs S&P 500 | 1.15 | 1.51 |
| Max drawdown (3Y) | -51.5% | -47.8% |
| Market cap | $131.6B | $5.1B |
| P/E (trailing) | 70.4 | 54.9 |
| Dividend yield | 0.73% | 0.24% |
| Sector / category | Information Technology | US Listed |
Year-by-year returns
| Year | GLW | MTRN |
|---|---|---|
| 2022 | -11.6% | -4.3% |
| 2023 | -1.2% | +49.4% |
| 2024 | +60.6% | -23.7% |
| 2025 | +87.8% | +26.4% |
| 2026 | +75.1% | +98.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are GLW and MTRN good diversifiers for each other?
Somewhat, no more. With 0.55 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between GLW and MTRN?
Using weekly returns as of 2026-08-27: 0.55 over 3 years, with 0.60 over the last year and 0.48 over 5 years.
Is MTRN a good diversifier for GLW?
Somewhat, no more. With 0.55 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.55 mean?
A reading of 0.55 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-mtrn.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/glw-vs-mtrn/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: GLW correlations · MTRN correlations
