QQQ vs SOTK: Correlation
Invesco QQQ Trust (QQQ) and Sono-Tek Corporation (SOTK) show a weak relationship: their 3-year correlation of weekly returns is 0.22.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are QQQ and SOTK?
On 3 years of weekly data the QQQ/SOTK correlation comes out at 0.22, weak. The past 12 months show a weaker link (0.05) than the 3-year average (0.22). The 5-year figure is 0.15, and annualized covariance runs at 144.9 %².
By 3-year correlation, SOTK places #2591 of the 4755 assets tracked against QQQ. Their recent paths diverged sharply: over the last 12 months SOTK outperformed by 23.8 percentage points (+26.3% for QQQ against +50.1% for SOTK). Note the risk asymmetry: SOTK runs 1.7 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.
QQQ vs SOTK: side by side
| QQQ (Invesco QQQ Trust) | SOTK (Sono-Tek Corporation) | |
|---|---|---|
| 1-year return | +26.3% | +50.1% |
| 5-year return | +95.4% | +46.2% |
| Volatility (ann.) | 19.6% | 33.8% |
| Beta vs S&P 500 | 1.28 | 0.46 |
| Max drawdown (3Y) | -22.8% | -46.5% |
| Market cap | – | $0.1B |
| P/E (trailing) | – | 38.7 |
| Dividend yield | 0.44% | 0.00% |
| Expense ratio | 0.18% | – |
| Assets under management | $452.8B | – |
| Sector / category | ETF · US Growth & Tech | US Listed |
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 | QQQ | SOTK |
|---|---|---|
| 2022 | -32.6% | -13.6% |
| 2023 | +54.9% | -15.7% |
| 2024 | +25.6% | -25.9% |
| 2025 | +20.8% | +3.0% |
| 2026 | +17.7% | +21.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are QQQ and SOTK good diversifiers for each other?
A fair diversifier. At 0.22, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between QQQ and SOTK?
Using weekly returns as of 2026-08-27: 0.22 over 3 years, with 0.05 over the last year and 0.15 over 5 years.
Is SOTK a good diversifier for QQQ?
A fair diversifier. At 0.22, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.22 mean?
On the −1 to +1 scale, 0.22 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/qqq-vs-sotk.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/qqq-vs-sotk/)
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Related comparisons
Hubs: QQQ correlations · SOTK correlations
