CGNX vs LFUS: Correlation
How closely do Cognex Corporation (CGNX) and Littelfuse, Inc. (LFUS) trade together? Their weekly returns over three years give a correlation of 0.58, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CGNX and LFUS?
On 3 years of weekly data the CGNX/LFUS correlation comes out at 0.58, moderate. Recent behaviour matches the longer record: 0.50 over 1 year against 0.58 over 3. The 5-year figure is 0.53, and annualized covariance runs at 930.7 %².
Few assets follow CGNX as closely as LFUS, which ranks #3 of 16 tracked partners. Correlation aside, the last 12 months split them widely, with LFUS ahead by 18.8 points (+43.2% versus +62.0%).
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.
CGNX vs LFUS: side by side
| CGNX (Cognex Corporation) | LFUS (Littelfuse, Inc.) | |
|---|---|---|
| 1-year return | +43.2% | +62.0% |
| 5-year return | -27.4% | +53.7% |
| Volatility (ann.) | 45.5% | 35.3% |
| Beta vs S&P 500 | 1.27 | 1.44 |
| Max drawdown (3Y) | -55.7% | -45.0% |
| Market cap | $10.6B | $10.7B |
| P/E (trailing) | 59.4 | – |
| Dividend yield | 0.54% | 0.72% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CGNX | LFUS |
|---|---|---|
| 2022 | -39.1% | -29.4% |
| 2023 | -10.8% | +22.7% |
| 2024 | -13.4% | -11.0% |
| 2025 | +1.2% | +8.6% |
| 2026 | +75.8% | +67.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CGNX and LFUS good diversifiers for each other?
Somewhat, no more. With 0.58 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between CGNX and LFUS?
Using weekly returns as of 2026-08-27: 0.58 over 3 years, with 0.50 over the last year and 0.53 over 5 years.
Is LFUS a good diversifier for CGNX?
Somewhat, no more. With 0.58 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.58 mean?
On the −1 to +1 scale, 0.58 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/cgnx-vs-lfus.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/cgnx-vs-lfus/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: CGNX correlations · LFUS correlations
