DIOD vs POWI: Correlation
Diodes Incorporated (DIOD) and Power Integrations, Inc. (POWI) show a strong relationship: their 3-year correlation of weekly returns is 0.68.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are DIOD and POWI?
Over the past 3 years, DIOD and POWI moved with a correlation of 0.68, which is strong. Little has changed lately, as the 1-year reading of 0.63 lands near the 3-year figure. Over 5 years the correlation is 0.71, and the annualized covariance of weekly returns is 1585.3 %².
By 3-year correlation, POWI places #6 of the 25 assets tracked against DIOD. Their recent paths diverged sharply: over the last 12 months DIOD outperformed by 41.2 percentage points (+61.7% for DIOD against +20.5% for POWI).
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.
DIOD vs POWI: side by side
| DIOD (Diodes Incorporated) | POWI (Power Integrations, Inc.) | |
|---|---|---|
| 1-year return | +61.7% | +20.5% |
| 5-year return | -7.4% | -46.7% |
| Volatility (ann.) | 50.3% | 46.5% |
| Beta vs S&P 500 | 1.84 | 1.59 |
| Max drawdown (3Y) | -60.1% | -63.6% |
| Market cap | $4.2B | $3.1B |
| P/E (trailing) | 48.6 | 125.7 |
| Dividend yield | 0.00% | 1.55% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | DIOD | POWI |
|---|---|---|
| 2022 | -30.7% | -22.1% |
| 2023 | +5.8% | +15.6% |
| 2024 | -23.4% | -24.0% |
| 2025 | -20.0% | -41.3% |
| 2026 | +84.2% | +56.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are DIOD and POWI good diversifiers for each other?
Only partially. A correlation of 0.68 means DIOD and POWI 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 DIOD and POWI?
The DIOD/POWI correlation stands at 0.68 on a 3-year window (1 year: 0.63, 5 years: 0.71), computed from weekly returns as of 2026-08-27.
Is POWI a good diversifier for DIOD?
Only partially. A correlation of 0.68 means DIOD and POWI 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?
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/diod-vs-powi.json
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[](https://www.pairbook.io/pair/diod-vs-powi/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: DIOD correlations · POWI correlations
