POWI vs VICR: Correlation
Power Integrations, Inc. (POWI) and Vicor Corporation (VICR) show a moderate relationship: their 3-year correlation of weekly returns is 0.51.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are POWI and VICR?
On 3 years of weekly data the POWI/VICR correlation comes out at 0.51, moderate. The relationship has been stable: the 1-year correlation (0.53) sits close to the 3-year figure. The 5-year figure is 0.51, and annualized covariance runs at 1685.7 %².
Within POWI's tracked universe of 17 assets, VICR comes in at #10 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months VICR outperformed by 276.3 percentage points (+20.5% for POWI against +296.8% for VICR). Risk is not evenly split, since VICR carries 1.5 times the volatility of the other side.
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.
POWI vs VICR: side by side
| POWI (Power Integrations, Inc.) | VICR (Vicor Corporation) | |
|---|---|---|
| 1-year return | +20.5% | +296.8% |
| 5-year return | -46.7% | +65.8% |
| Volatility (ann.) | 46.5% | 71.1% |
| Beta vs S&P 500 | 1.59 | 2.00 |
| Max drawdown (3Y) | -63.6% | -53.9% |
| Market cap | $3.1B | $9.4B |
| P/E (trailing) | 125.7 | 65.3 |
| Dividend yield | 1.55% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | POWI | VICR |
|---|---|---|
| 2022 | -22.1% | -57.7% |
| 2023 | +15.6% | -16.4% |
| 2024 | -24.0% | +7.5% |
| 2025 | -41.3% | +126.8% |
| 2026 | +56.7% | +85.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are POWI and VICR good diversifiers for each other?
Somewhat, no more. With 0.51 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between POWI and VICR?
The POWI/VICR correlation stands at 0.51 on a 3-year window (1 year: 0.53, 5 years: 0.51), computed from weekly returns as of 2026-08-27.
Is VICR a good diversifier for POWI?
Somewhat, no more. With 0.51 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.51 mean?
On the −1 to +1 scale, 0.51 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/powi-vs-vicr.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/powi-vs-vicr/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: POWI correlations · VICR correlations
