MPWR vs SOXX: Correlation
Measured on weekly returns over the past three years, Monolithic Power Systems (MPWR) and iShares Semiconductor ETF (SOXX) carry a correlation of 0.75, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are MPWR and SOXX?
On 3 years of weekly data the MPWR/SOXX correlation comes out at 0.75, strong. The relationship has been stable: the 1-year correlation (0.67) sits close to the 3-year figure. The 5-year figure is 0.78, and annualized covariance runs at 1267.8 %².
Few assets follow MPWR as closely as SOXX, which ranks #2 of 41 tracked partners. Their recent paths diverged sharply: over the last 12 months SOXX outperformed by 57.6 percentage points (+52.4% for MPWR against +110.0% for SOXX). The link looks structural: the rolling one-year correlation barely moved, holding between 0.66 and 0.86.
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.
MPWR vs SOXX: side by side
| MPWR (Monolithic Power Systems) | SOXX (iShares Semiconductor ETF) | |
|---|---|---|
| 1-year return | +52.4% | +110.0% |
| 5-year return | +170.3% | +247.5% |
| Volatility (ann.) | 48.1% | 35.2% |
| Beta vs S&P 500 | 2.22 | 1.93 |
| Max drawdown (3Y) | -51.6% | -41.4% |
| Market cap | $64.4B | – |
| P/E (trailing) | 79.4 | – |
| Dividend yield | 0.55% | 0.29% |
| Expense ratio | – | 0.33% |
| Assets under management | – | $44.7B |
| Sector / category | Information Technology | 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 | MPWR | SOXX |
|---|---|---|
| 2022 | -27.8% | -35.1% |
| 2023 | +79.8% | +67.1% |
| 2024 | -5.6% | +12.9% |
| 2025 | +54.5% | +40.7% |
| 2026 | +45.2% | +74.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Fund exposure
Keep in mind that SOXX holds MPWR at a 3.43% weight, which makes a slice of this correlation mechanical rather than coincidental.
Are MPWR and SOXX good diversifiers for each other?
To a limited degree. At 0.75 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between MPWR and SOXX?
The MPWR/SOXX correlation stands at 0.75 on a 3-year window (1 year: 0.67, 5 years: 0.78), computed from weekly returns as of 2026-08-27.
Is SOXX a good diversifier for MPWR?
To a limited degree. At 0.75 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.75 mean?
On the −1 to +1 scale, 0.75 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/mpwr-vs-soxx.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/mpwr-vs-soxx/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: MPWR correlations · SOXX correlations
