DUOL vs QQQ: Correlation
How closely do Duolingo, Inc. (DUOL) and Invesco QQQ Trust (QQQ) trade together? Their weekly returns over three years give a correlation of 0.41, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are DUOL and QQQ?
Over the past 3 years, DUOL and QQQ moved with a correlation of 0.41, which is moderate. The link has loosened recently: the 1-year correlation (0.27) runs below the 3-year figure (0.41). Over 5 years the correlation is 0.40, and the annualized covariance of weekly returns is 493.2 %².
By 3-year correlation, QQQ places #6 of the 13 assets tracked against DUOL. Their recent paths diverged sharply: over the last 12 months QQQ outperformed by 81.4 percentage points (-55.1% for DUOL against +26.3% for QQQ). Note the risk asymmetry: DUOL runs 3.2 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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.
DUOL vs QQQ: side by side
| DUOL (Duolingo, Inc.) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | -55.1% | +26.3% |
| 5-year return | +11.0% | +95.4% |
| Volatility (ann.) | 62.1% | 19.6% |
| Beta vs S&P 500 | 1.55 | 1.28 |
| Max drawdown (3Y) | -83.3% | -22.8% |
| Market cap | $6.7B | – |
| P/E (trailing) | 16.6 | – |
| 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 | DUOL | QQQ |
|---|---|---|
| 2022 | -33.0% | -32.6% |
| 2023 | +218.9% | +54.9% |
| 2024 | +42.9% | +25.6% |
| 2025 | -45.9% | +20.8% |
| 2026 | -18.6% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are DUOL and QQQ good diversifiers for each other?
Reasonably. At 0.41, DUOL and QQQ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between DUOL and QQQ?
The DUOL/QQQ correlation stands at 0.41 on a 3-year window (1 year: 0.27, 5 years: 0.40), computed from weekly returns as of 2026-08-27.
Is QQQ a good diversifier for DUOL?
Reasonably. At 0.41, DUOL and QQQ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.41 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.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/duol-vs-qqq.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/duol-vs-qqq/)
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Related comparisons
Hubs: DUOL correlations · QQQ correlations
