COHU vs DIOD: Correlation
Measured on weekly returns over the past three years, Cohu, Inc. (COHU) and Diodes Incorporated (DIOD) carry a correlation of 0.68, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are COHU and DIOD?
Over the past 3 years, COHU and DIOD moved with a correlation of 0.68, which is strong. Recent behaviour matches the longer record: 0.63 over 1 year against 0.68 over 3. Over 5 years the correlation is 0.70, and the annualized covariance of weekly returns is 1539.3 %².
Within COHU's tracked universe of 24 assets, DIOD comes in at #7 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months COHU outperformed by 93.1 percentage points (+154.8% for COHU against +61.7% for DIOD).
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.
COHU vs DIOD: side by side
| COHU (Cohu, Inc.) | DIOD (Diodes Incorporated) | |
|---|---|---|
| 1-year return | +154.8% | +61.7% |
| 5-year return | +41.3% | -7.4% |
| Volatility (ann.) | 44.8% | 50.3% |
| Beta vs S&P 500 | 1.74 | 1.84 |
| Max drawdown (3Y) | -64.7% | -60.1% |
| Market cap | $2.4B | $4.2B |
| P/E (trailing) | – | 48.6 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | COHU | DIOD |
|---|---|---|
| 2022 | -15.9% | -30.7% |
| 2023 | +10.4% | +5.8% |
| 2024 | -24.6% | -23.4% |
| 2025 | -12.8% | -20.0% |
| 2026 | +122.1% | +84.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are COHU and DIOD good diversifiers for each other?
Only partially. A correlation of 0.68 means COHU and DIOD 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 COHU and DIOD?
Using weekly returns as of 2026-08-27: 0.68 over 3 years, with 0.63 over the last year and 0.70 over 5 years.
Is DIOD a good diversifier for COHU?
Only partially. A correlation of 0.68 means COHU and DIOD share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.68 mean?
A reading of 0.68 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/cohu-vs-diod.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/cohu-vs-diod/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: COHU correlations · DIOD correlations
