GKOS vs QQQ: Correlation
How closely do Glaukos Corporation (GKOS) and Invesco QQQ Trust (QQQ) trade together? Their weekly returns over three years give a correlation of 0.21, which is weak.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are GKOS and QQQ?
Across a 3-year window, the weekly returns of GKOS and QQQ correlate at 0.21, weak. The link has loosened recently: the 1-year correlation (-0.02) runs below the 3-year figure (0.21). Stretching to 5 years gives 0.34, with an annualized covariance of 191.5 %².
Among the 12 assets we track against GKOS, QQQ sits near the bottom by co-movement, at rank #9. Correlation aside, the last 12 months split them widely, with GKOS ahead by 64.9 points (+91.2% versus +26.3%). One caveat on sizing: GKOS is 2.3 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.
GKOS vs QQQ: side by side
| GKOS (Glaukos Corporation) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | +91.2% | +26.3% |
| 5-year return | +218.6% | +95.4% |
| Volatility (ann.) | 45.7% | 19.6% |
| Beta vs S&P 500 | 0.85 | 1.28 |
| Max drawdown (3Y) | -53.7% | -22.8% |
| Market cap | $10.7B | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.44% |
| Expense ratio | – | 0.18% |
| Assets under management | – | $452.8B |
| Sector / category | US Listed | 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 | GKOS | QQQ |
|---|---|---|
| 2022 | -1.7% | -32.6% |
| 2023 | +82.0% | +54.9% |
| 2024 | +88.6% | +25.6% |
| 2025 | -24.7% | +20.8% |
| 2026 | +61.1% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are GKOS and QQQ good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.21 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between GKOS and QQQ?
The GKOS/QQQ correlation stands at 0.21 on a 3-year window (1 year: -0.02, 5 years: 0.34), computed from weekly returns as of 2026-08-27.
Is QQQ a good diversifier for GKOS?
Yes, to a useful degree: a correlation of 0.21 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.21 mean?
On the −1 to +1 scale, 0.21 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: GKOS correlations · QQQ correlations
