QQQ vs TTEK: Correlation
Invesco QQQ Trust (QQQ) and Tetra Tech, Inc. (TTEK) show a weak relationship: their 3-year correlation of weekly returns is 0.20.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are QQQ and TTEK?
On 3 years of weekly data the QQQ/TTEK correlation comes out at 0.20, weak. Little has changed lately, as the 1-year reading of 0.13 lands near the 3-year figure. The 5-year figure is 0.42, and annualized covariance runs at 120.6 %².
Among the 4755 assets we track against QQQ, TTEK ranks #2861 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months QQQ outperformed by 26.4 percentage points (+26.3% for QQQ against -0.1% for TTEK). Risk is not evenly split, since TTEK carries 1.5 times the volatility of the other side.
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 TTEK: side by side
| QQQ (Invesco QQQ Trust) | TTEK (Tetra Tech, Inc.) | |
|---|---|---|
| 1-year return | +26.3% | -0.1% |
| 5-year return | +95.4% | +32.3% |
| Volatility (ann.) | 19.6% | 30.3% |
| Beta vs S&P 500 | 1.28 | 0.54 |
| Max drawdown (3Y) | -22.8% | -47.5% |
| Market cap | – | $9.4B |
| P/E (trailing) | – | 22.1 |
| Dividend yield | 0.44% | 0.73% |
| Expense ratio | 0.18% | – |
| Assets under management | $452.8B | – |
| Sector / category | ETF · US Growth & Tech | US Listed |
On the fund side, QQQ sits in the Large Growth category at Invesco, with $452.8B under management, 104 holdings, a 0.18% expense ratio, a 0.44% trailing dividend yield.
Year-by-year returns
| Year | QQQ | TTEK |
|---|---|---|
| 2022 | -32.6% | -14.0% |
| 2023 | +54.9% | +15.7% |
| 2024 | +25.6% | +20.0% |
| 2025 | +20.8% | -15.2% |
| 2026 | +17.7% | +9.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are QQQ and TTEK good diversifiers for each other?
A fair diversifier. At 0.20, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between QQQ and TTEK?
As of 2026-08-27, the correlation of weekly returns between QQQ and TTEK is 0.20 over 3 years, 0.13 over 1 year and 0.42 over 5 years.
Is TTEK a good diversifier for QQQ?
A fair diversifier. At 0.20, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.20 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/qqq-vs-ttek.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/qqq-vs-ttek/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: QQQ correlations · TTEK correlations
