POWI vs SOXX: Correlation
How closely do Power Integrations, Inc. (POWI) and iShares Semiconductor ETF (SOXX) trade together? Their weekly returns over three years give a correlation of 0.63, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are POWI and SOXX?
Across a 3-year window, the weekly returns of POWI and SOXX correlate at 0.63, strong. Recent behaviour matches the longer record: 0.55 over 1 year against 0.63 over 3. Stretching to 5 years gives 0.67, with an annualized covariance of 1034.9 %².
Among the 17 assets we track against POWI, SOXX ranks #6 by 3-year correlation. Correlation aside, the last 12 months split them widely, with SOXX ahead by 89.5 points (+20.5% versus +110.0%).
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 SOXX: side by side
| POWI (Power Integrations, Inc.) | SOXX (iShares Semiconductor ETF) | |
|---|---|---|
| 1-year return | +20.5% | +110.0% |
| 5-year return | -46.7% | +247.5% |
| Volatility (ann.) | 46.5% | 35.2% |
| Beta vs S&P 500 | 1.59 | 1.93 |
| Max drawdown (3Y) | -63.6% | -41.4% |
| Market cap | $3.1B | – |
| P/E (trailing) | 125.7 | – |
| Dividend yield | 1.55% | 0.29% |
| Expense ratio | – | 0.33% |
| Assets under management | – | $44.7B |
| Sector / category | US Listed | ETF · Thematic |
On the fund side, SOXX sits in the Technology category at iShares, with $44.7B under management, 30 holdings, a 0.33% expense ratio, a 0.29% trailing dividend yield.
Year-by-year returns
| Year | POWI | SOXX |
|---|---|---|
| 2022 | -22.1% | -35.1% |
| 2023 | +15.6% | +67.1% |
| 2024 | -24.0% | +12.9% |
| 2025 | -41.3% | +40.7% |
| 2026 | +56.7% | +74.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are POWI and SOXX good diversifiers for each other?
Only partially. A correlation of 0.63 means POWI and SOXX 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 POWI and SOXX?
Using weekly returns as of 2026-08-27: 0.63 over 3 years, with 0.55 over the last year and 0.67 over 5 years.
Is SOXX a good diversifier for POWI?
Only partially. A correlation of 0.63 means POWI and SOXX 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/powi-vs-soxx.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/powi-vs-soxx/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: POWI correlations · SOXX correlations
