MPWR vs QUAL: Correlation
Monolithic Power Systems (MPWR) and iShares MSCI USA Quality Factor ETF (QUAL) 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 MPWR and QUAL?
Across a 3-year window, the weekly returns of MPWR and QUAL correlate at 0.68, strong. The past 12 months show a weaker link (0.57) than the 3-year average (0.68). Stretching to 5 years gives 0.64, with an annualized covariance of 457.5 %².
Within MPWR's tracked universe of 41 assets, QUAL comes in at #6 by 3-year correlation. Correlation aside, the last 12 months split them widely, with MPWR ahead by 32.7 points (+52.4% versus +19.7%). On a rolling one-year basis the correlation drifted between 0.50 and 0.82, a moderate band. Note the risk asymmetry: MPWR runs 3.4 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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 QUAL: side by side
| MPWR (Monolithic Power Systems) | QUAL (iShares MSCI USA Quality Factor ETF) | |
|---|---|---|
| 1-year return | +52.4% | +19.7% |
| 5-year return | +170.3% | +68.0% |
| Volatility (ann.) | 48.1% | 14.0% |
| Beta vs S&P 500 | 2.22 | 0.93 |
| Max drawdown (3Y) | -51.6% | -18.0% |
| Market cap | $64.4B | – |
| P/E (trailing) | 79.4 | – |
| Dividend yield | 0.55% | 0.86% |
| Expense ratio | – | 0.15% |
| Assets under management | – | $46.5B |
| Sector / category | Information Technology | ETF · US Style |
QUAL, iShares's Large Blend fund, carries $46.5B under management, 123 holdings, a 0.15% expense ratio, a 0.86% trailing dividend yield.
Year-by-year returns
| Year | MPWR | QUAL |
|---|---|---|
| 2022 | -27.8% | -20.5% |
| 2023 | +79.8% | +30.9% |
| 2024 | -5.6% | +22.3% |
| 2025 | +54.5% | +12.7% |
| 2026 | +45.2% | +13.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are MPWR and QUAL good diversifiers for each other?
To a limited degree. At 0.68 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 QUAL?
Using weekly returns as of 2026-08-27: 0.68 over 3 years, with 0.57 over the last year and 0.64 over 5 years.
Is QUAL a good diversifier for MPWR?
To a limited degree. At 0.68 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 0.68 mean?
A reading of 0.68 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/mpwr-vs-qual.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/mpwr-vs-qual/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: MPWR correlations · QUAL correlations
