SPY vs VICR: Correlation
Measured on weekly returns over the past three years, SPDR S&P 500 ETF Trust (SPY) and Vicor Corporation (VICR) carry a correlation of 0.41, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are SPY and VICR?
Across a 3-year window, the weekly returns of SPY and VICR correlate at 0.41, moderate. Little has changed lately, as the 1-year reading of 0.46 lands near the 3-year figure. Stretching to 5 years gives 0.42, with an annualized covariance of 418.2 %².
Among the 4755 assets we track against SPY, VICR ranks #1094 by 3-year correlation. The last year tells two different stories: VICR led by 276.2 percentage points, +20.6% for SPY against +296.8% for VICR. Risk is not evenly split, since VICR carries 4.9 times the volatility of the other side.
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.
SPY vs VICR: side by side
| SPY (SPDR S&P 500 ETF Trust) | VICR (Vicor Corporation) | |
|---|---|---|
| 1-year return | +20.6% | +296.8% |
| 5-year return | +82.4% | +65.8% |
| Volatility (ann.) | 14.5% | 71.1% |
| Beta vs S&P 500 | 1.00 | 2.00 |
| Max drawdown (3Y) | -18.8% | -53.9% |
| Market cap | – | $9.4B |
| P/E (trailing) | – | 65.3 |
| Dividend yield | 1.01% | 0.00% |
| Expense ratio | 0.09% | – |
| Assets under management | $795.3B | – |
| Sector / category | ETF · US Large Cap | US Listed |
SPY, State Street Investment Management's Large Blend fund, carries $795.3B under management, 504 holdings, a 0.09% expense ratio, a 1.01% trailing dividend yield.
Year-by-year returns
| Year | SPY | VICR |
|---|---|---|
| 2022 | -18.2% | -57.7% |
| 2023 | +26.2% | -16.4% |
| 2024 | +24.9% | +7.5% |
| 2025 | +17.7% | +126.8% |
| 2026 | +13.7% | +85.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are SPY and VICR good diversifiers for each other?
Reasonably. At 0.41, SPY and VICR keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between SPY and VICR?
The SPY/VICR correlation stands at 0.41 on a 3-year window (1 year: 0.46, 5 years: 0.42), computed from weekly returns as of 2026-08-27.
Is VICR a good diversifier for SPY?
Reasonably. At 0.41, SPY and VICR keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.41 mean?
On the −1 to +1 scale, 0.41 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.
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Related comparisons
Hubs: SPY correlations · VICR correlations
