GILD vs QQQ: Correlation
How closely do Gilead Sciences (GILD) and Invesco QQQ Trust (QQQ) trade together? Their weekly returns over three years give a correlation of 0.12, which is weak.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are GILD and QQQ?
Across a 3-year window, the weekly returns of GILD and QQQ correlate at 0.12, weak. Lately the two have drifted apart, with the 1-year correlation at -0.06 versus 0.12 over 3 years. Stretching to 5 years gives 0.18, with an annualized covariance of 54.7 %².
Among the 30 assets we track against GILD, QQQ ranks #20 by 3-year correlation. The trailing year gives GILD the advantage: +34.1% versus +26.3%, a 7.8-point spread. On a rolling one-year basis the correlation drifted between -0.03 and 0.33, a moderate band.
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.
GILD vs QQQ: side by side
| GILD (Gilead Sciences) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | +34.1% | +26.3% |
| 5-year return | +148.1% | +95.4% |
| Volatility (ann.) | 24.1% | 19.6% |
| Beta vs S&P 500 | 0.33 | 1.28 |
| Max drawdown (3Y) | -26.6% | -22.8% |
| Market cap | $184.6B | – |
| P/E (trailing) | – | – |
| Dividend yield | 2.17% | 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 | GILD | QQQ |
|---|---|---|
| 2022 | +23.6% | -32.6% |
| 2023 | -2.0% | +54.9% |
| 2024 | +18.7% | +25.6% |
| 2025 | +36.6% | +20.8% |
| 2026 | +22.8% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Fund exposure
GILD represents 0.82% of QQQ's portfolio, so part of any move in QQQ is GILD itself, and the correlation between them is partly mechanical.
Are GILD and QQQ good diversifiers for each other?
Yes: at 0.12, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between GILD and QQQ?
Using weekly returns as of 2026-08-27: 0.12 over 3 years, with -0.06 over the last year and 0.18 over 5 years.
Is QQQ a good diversifier for GILD?
Yes: at 0.12, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of 0.12 mean?
On the −1 to +1 scale, 0.12 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.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/gild-vs-qqq.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/gild-vs-qqq/)
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Related comparisons
Hubs: GILD correlations · QQQ correlations
