APH vs VST: Correlation
How closely do Amphenol (APH) and Vistra Corp. (VST) trade together? Their weekly returns over three years give a correlation of 0.54, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are APH and VST?
Over the past 3 years, APH and VST moved with a correlation of 0.54, which is moderate. The relationship has been stable: the 1-year correlation (0.49) sits close to the 3-year figure. Over 5 years the correlation is 0.49, and the annualized covariance of weekly returns is 950.0 %².
Within APH's tracked universe of 38 assets, VST comes in at #23 by 3-year correlation. The last year tells two different stories: APH led by 75.3 percentage points, +47.5% for APH against -27.8% for VST. Do not treat this figure as fixed: across three years the rolling one-year correlation ranged all the way from 0.01 to 0.68. One caveat on sizing: VST is 1.6 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.
APH vs VST: side by side
| APH (Amphenol) | VST (Vistra Corp.) | |
|---|---|---|
| 1-year return | +47.5% | -27.8% |
| 5-year return | +338.9% | +713.7% |
| Volatility (ann.) | 33.6% | 52.8% |
| Beta vs S&P 500 | 1.57 | 1.62 |
| Max drawdown (3Y) | -28.2% | -48.8% |
| Market cap | $199.0B | $46.9B |
| P/E (trailing) | 40.3 | 23.6 |
| Dividend yield | 0.57% | 0.65% |
| Sector / category | Information Technology | Utilities |
Year-by-year returns
| Year | APH | VST |
|---|---|---|
| 2022 | -12.0% | +5.1% |
| 2023 | +31.5% | +70.7% |
| 2024 | +41.3% | +261.5% |
| 2025 | +96.1% | +17.7% |
| 2026 | +19.8% | -13.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are APH and VST good diversifiers for each other?
To a limited degree. At 0.54 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 APH and VST?
As of 2026-08-27, the correlation of weekly returns between APH and VST is 0.54 over 3 years, 0.49 over 1 year and 0.49 over 5 years.
Is VST a good diversifier for APH?
To a limited degree. At 0.54 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 0.54 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.
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Related comparisons
Hubs: APH correlations · VST correlations
