DGX vs QQQ: Correlation
Quest Diagnostics (DGX) and Invesco QQQ Trust (QQQ) show a near-zero relationship: their 3-year correlation of weekly returns is -0.03.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are DGX and QQQ?
On 3 years of weekly data the DGX/QQQ correlation comes out at -0.03, near zero, meaning they move largely independently. Lately the two have drifted apart, with the 1-year correlation at -0.35 versus -0.03 over 3 years. The 5-year figure is 0.16, and annualized covariance runs at -10.3 %².
By 3-year correlation, QQQ places #22 of the 32 assets tracked against DGX. The trailing year gives DGX the advantage: +38.5% versus +26.3%, a 12.2-point spread. Do not treat this figure as fixed: across three years the rolling one-year correlation ranged all the way from -0.33 to 0.33.
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.
DGX vs QQQ: side by side
| DGX (Quest Diagnostics) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | +38.5% | +26.3% |
| 5-year return | +78.8% | +95.4% |
| Volatility (ann.) | 19.1% | 19.6% |
| Beta vs S&P 500 | 0.09 | 1.28 |
| Max drawdown (3Y) | -12.4% | -22.8% |
| Market cap | $27.0B | – |
| P/E (trailing) | 26.0 | – |
| Dividend yield | 1.36% | 0.44% |
| Expense ratio | – | 0.18% |
| Assets under management | – | $452.8B |
| Sector / category | Health Care | ETF · US Growth & Tech |
QQQ is a Large Growth fund from Invesco: $452.8B under management, 104 holdings, a 0.18% expense ratio, a 0.44% trailing dividend yield.
Year-by-year returns
| Year | DGX | QQQ |
|---|---|---|
| 2022 | -7.8% | -32.6% |
| 2023 | -10.1% | +54.9% |
| 2024 | +11.8% | +25.6% |
| 2025 | +17.2% | +20.8% |
| 2026 | +42.8% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are DGX and QQQ good diversifiers for each other?
By historical standards, yes. A correlation of -0.03 means the two rarely move for the same reasons.
FAQ
What is the correlation between DGX and QQQ?
The DGX/QQQ correlation stands at -0.03 on a 3-year window (1 year: -0.35, 5 years: 0.16), computed from weekly returns as of 2026-08-27.
Is QQQ a good diversifier for DGX?
By historical standards, yes. A correlation of -0.03 means the two rarely move for the same reasons.
What does a correlation of -0.03 mean?
A reading of -0.03 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
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Hubs: DGX correlations · QQQ correlations
