AOSL vs DIOD: Correlation
Alpha and Omega Semiconductor Limited (AOSL) and Diodes Incorporated (DIOD) show a strong relationship: their 3-year correlation of weekly returns is 0.63.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AOSL and DIOD?
On 3 years of weekly data the AOSL/DIOD correlation comes out at 0.63, strong. Lately the two have moved closer together, with the 1-year correlation at 0.74 versus 0.63 over 3 years. The 5-year figure is 0.66, and annualized covariance runs at 2203.9 %².
DIOD is one of the assets that tracks AOSL most closely: it ranks #1 out of the 16 assets we track against AOSL. Their recent paths diverged sharply: over the last 12 months DIOD outperformed by 73.1 percentage points (-11.4% for AOSL 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.
AOSL vs DIOD: side by side
| AOSL (Alpha and Omega Semiconductor Limited) | DIOD (Diodes Incorporated) | |
|---|---|---|
| 1-year return | -11.4% | +61.7% |
| 5-year return | -9.2% | -7.4% |
| Volatility (ann.) | 69.3% | 50.3% |
| Beta vs S&P 500 | 2.34 | 1.84 |
| Max drawdown (3Y) | -66.9% | -60.1% |
| Market cap | $0.8B | $4.2B |
| P/E (trailing) | – | 48.6 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | AOSL | DIOD |
|---|---|---|
| 2022 | -52.8% | -30.7% |
| 2023 | -8.8% | +5.8% |
| 2024 | +42.1% | -23.4% |
| 2025 | -46.5% | -20.0% |
| 2026 | +32.4% | +84.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AOSL and DIOD good diversifiers for each other?
Only partially. A correlation of 0.63 means AOSL 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 AOSL and DIOD?
As of 2026-08-27, the correlation of weekly returns between AOSL and DIOD is 0.63 over 3 years, 0.74 over 1 year and 0.66 over 5 years.
Is DIOD a good diversifier for AOSL?
Only partially. A correlation of 0.63 means AOSL 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 0.63 mean?
On the −1 to +1 scale, 0.63 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/aosl-vs-diod.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/aosl-vs-diod/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: AOSL correlations · DIOD correlations
