DGII vs QQQ: Correlation
How closely do Digi International Inc. (DGII) and Invesco QQQ Trust (QQQ) trade together? Their weekly returns over three years give a correlation of 0.40, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are DGII and QQQ?
Across a 3-year window, the weekly returns of DGII and QQQ correlate at 0.40, moderate. Recent behaviour matches the longer record: 0.44 over 1 year against 0.40 over 3. Stretching to 5 years gives 0.45, with an annualized covariance of 315.2 %².
QQQ is close to the least connected end of DGII's tracked universe, ranking #7 of 10. The last year tells two different stories: DGII led by 99.7 percentage points, +126.0% for DGII against +26.3% for QQQ. One caveat on sizing: DGII is 2.0 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.
DGII vs QQQ: side by side
| DGII (Digi International Inc.) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | +126.0% | +26.3% |
| 5-year return | +253.2% | +95.4% |
| Volatility (ann.) | 40.0% | 19.6% |
| Beta vs S&P 500 | 1.26 | 1.28 |
| Max drawdown (3Y) | -35.2% | -22.8% |
| Market cap | $2.9B | – |
| P/E (trailing) | 60.5 | – |
| 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 | DGII | QQQ |
|---|---|---|
| 2022 | +48.8% | -32.6% |
| 2023 | -28.9% | +54.9% |
| 2024 | +16.3% | +25.6% |
| 2025 | +43.2% | +20.8% |
| 2026 | +78.9% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are DGII and QQQ good diversifiers for each other?
Reasonably. At 0.40, DGII and QQQ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between DGII and QQQ?
As of 2026-08-27, the correlation of weekly returns between DGII and QQQ is 0.40 over 3 years, 0.44 over 1 year and 0.45 over 5 years.
Is QQQ a good diversifier for DGII?
Reasonably. At 0.40, DGII and QQQ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.40 mean?
A reading of 0.40 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
$ curl https://www.pairbook.io/api/v1/pairs/dgii-vs-qqq.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/dgii-vs-qqq/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: DGII correlations · QQQ correlations
