GLW vs KN: Correlation
How closely do Corning Inc. (GLW) and Knowles Corporation (KN) 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 KN?
Across a 3-year window, the weekly returns of GLW and KN correlate at 0.55, moderate. Little has changed lately, as the 1-year reading of 0.62 lands near the 3-year figure. Stretching to 5 years gives 0.52, with an annualized covariance of 846.0 %².
Among the 37 assets we track against GLW, KN ranks #5 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months GLW outperformed by 67.8 percentage points (+129.7% for GLW against +61.9% for KN).
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 KN: side by side
| GLW (Corning Inc.) | KN (Knowles Corporation) | |
|---|---|---|
| 1-year return | +129.7% | +61.9% |
| 5-year return | +331.4% | +73.8% |
| Volatility (ann.) | 42.1% | 36.5% |
| Beta vs S&P 500 | 1.15 | 1.65 |
| Max drawdown (3Y) | -51.5% | -38.0% |
| Market cap | $131.6B | $3.0B |
| P/E (trailing) | 70.4 | 41.1 |
| Dividend yield | 0.73% | 0.00% |
| Sector / category | Information Technology | US Listed |
Year-by-year returns
| Year | GLW | KN |
|---|---|---|
| 2022 | -11.6% | -29.7% |
| 2023 | -1.2% | +9.1% |
| 2024 | +60.6% | +11.3% |
| 2025 | +87.8% | +7.5% |
| 2026 | +75.1% | +63.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are GLW and KN good diversifiers for each other?
Only partially. A correlation of 0.55 means GLW and KN 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 GLW and KN?
As of 2026-08-27, the correlation of weekly returns between GLW and KN is 0.55 over 3 years, 0.62 over 1 year and 0.52 over 5 years.
Is KN a good diversifier for GLW?
Only partially. A correlation of 0.55 means GLW and KN share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.55 mean?
On the −1 to +1 scale, 0.55 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/glw-vs-kn.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/glw-vs-kn/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: GLW correlations · KN correlations
