MPWR vs SPYG: Correlation
Monolithic Power Systems (MPWR) and SPDR Portfolio S&P 500 Growth ETF (SPYG) show a strong relationship: their 3-year correlation of weekly returns is 0.67.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are MPWR and SPYG?
Over the past 3 years, MPWR and SPYG moved with a correlation of 0.67, which is strong. The past 12 months show a weaker link (0.53) than the 3-year average (0.67). Over 5 years the correlation is 0.66, and the annualized covariance of weekly returns is 613.3 %².
Within MPWR's tracked universe of 41 assets, SPYG comes in at #11 by 3-year correlation. The last year tells two different stories: MPWR led by 30.0 percentage points, +52.4% for MPWR against +22.4% for SPYG. The rolling one-year correlation moved between 0.48 and 0.78 over the past three years, a moderate range. One caveat on sizing: MPWR is 2.5 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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 SPYG: side by side
| MPWR (Monolithic Power Systems) | SPYG (SPDR Portfolio S&P 500 Growth ETF) | |
|---|---|---|
| 1-year return | +52.4% | +22.4% |
| 5-year return | +170.3% | +85.9% |
| Volatility (ann.) | 48.1% | 18.9% |
| Beta vs S&P 500 | 2.22 | 1.25 |
| Max drawdown (3Y) | -51.6% | -22.1% |
| Market cap | $64.4B | – |
| P/E (trailing) | 79.4 | – |
| Dividend yield | 0.55% | 0.49% |
| Expense ratio | – | 0.04% |
| Assets under management | – | $52.2B |
| Sector / category | Information Technology | ETF · US Style |
SPYG is a Large Growth fund from State Street Investment Management: $52.2B under management, 148 holdings, a 0.04% expense ratio, a 0.49% trailing dividend yield.
Year-by-year returns
| Year | MPWR | SPYG |
|---|---|---|
| 2022 | -27.8% | -29.4% |
| 2023 | +79.8% | +30.0% |
| 2024 | -5.6% | +36.0% |
| 2025 | +54.5% | +22.1% |
| 2026 | +45.2% | +14.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Fund exposure
MPWR represents 0.18% of SPYG's portfolio, so part of any move in SPYG is MPWR itself, and the correlation between them is partly mechanical.
Are MPWR and SPYG good diversifiers for each other?
To a limited degree. At 0.67 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 SPYG?
As of 2026-08-27, the correlation of weekly returns between MPWR and SPYG is 0.67 over 3 years, 0.53 over 1 year and 0.66 over 5 years.
Is SPYG a good diversifier for MPWR?
To a limited degree. At 0.67 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 0.67 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/mpwr-vs-spyg.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/mpwr-vs-spyg/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: MPWR correlations · SPYG correlations
