LFUS vs RELL: Correlation
Measured on weekly returns over the past three years, Littelfuse, Inc. (LFUS) and Richardson Electronics, Ltd. (RELL) carry a correlation of 0.44, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are LFUS and RELL?
Across a 3-year window, the weekly returns of LFUS and RELL correlate at 0.44, moderate. Recent behaviour matches the longer record: 0.47 over 1 year against 0.44 over 3. Stretching to 5 years gives 0.40, with an annualized covariance of 655.9 %².
Within LFUS's tracked universe of 25 assets, RELL comes in at #19 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months RELL outperformed by 23.6 percentage points (+62.0% for LFUS against +85.6% for RELL).
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.
LFUS vs RELL: side by side
| LFUS (Littelfuse, Inc.) | RELL (Richardson Electronics, Ltd.) | |
|---|---|---|
| 1-year return | +62.0% | +85.6% |
| 5-year return | +53.7% | +131.1% |
| Volatility (ann.) | 35.3% | 42.1% |
| Beta vs S&P 500 | 1.44 | 0.78 |
| Max drawdown (3Y) | -45.0% | -45.1% |
| Market cap | $10.7B | $0.3B |
| P/E (trailing) | – | 40.0 |
| Dividend yield | 0.72% | 1.35% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | LFUS | RELL |
|---|---|---|
| 2022 | -29.4% | +60.3% |
| 2023 | +22.7% | -36.4% |
| 2024 | -11.0% | +7.4% |
| 2025 | +8.6% | -20.6% |
| 2026 | +67.5% | +67.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are LFUS and RELL good diversifiers for each other?
Reasonably. At 0.44, LFUS and RELL keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between LFUS and RELL?
Using weekly returns as of 2026-08-27: 0.44 over 3 years, with 0.47 over the last year and 0.40 over 5 years.
Is RELL a good diversifier for LFUS?
Reasonably. At 0.44, LFUS and RELL keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.44 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/lfus-vs-rell.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/lfus-vs-rell/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: LFUS correlations · RELL correlations
