QQQ vs SSTI: Correlation
Invesco QQQ Trust (QQQ) and SoundThinking, Inc. (SSTI) show a weak relationship: their 3-year correlation of weekly returns is 0.29.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are QQQ and SSTI?
On 3 years of weekly data the QQQ/SSTI correlation comes out at 0.29, weak. Recent behaviour matches the longer record: 0.23 over 1 year against 0.29 over 3. The 5-year figure is 0.30, and annualized covariance runs at 303.7 %².
Within QQQ's tracked universe of 4755 assets, SSTI comes in at #1662 by 3-year correlation. Correlation aside, the last 12 months split them widely, with QQQ ahead by 75.6 points (+26.3% versus -49.3%). One caveat on sizing: SSTI is 2.7 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.
QQQ vs SSTI: side by side
| QQQ (Invesco QQQ Trust) | SSTI (SoundThinking, Inc.) | |
|---|---|---|
| 1-year return | +26.3% | -49.3% |
| 5-year return | +95.4% | -83.7% |
| Volatility (ann.) | 19.6% | 53.5% |
| Beta vs S&P 500 | 1.28 | 1.25 |
| Max drawdown (3Y) | -22.8% | -78.3% |
| Market cap | – | $0.1B |
| P/E (trailing) | – | – |
| Dividend yield | 0.44% | 0.00% |
| 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 | SSTI |
|---|---|---|
| 2022 | -32.6% | +14.6% |
| 2023 | +54.9% | -24.5% |
| 2024 | +25.6% | -48.9% |
| 2025 | +20.8% | -38.5% |
| 2026 | +17.7% | -21.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are QQQ and SSTI good diversifiers for each other?
A fair diversifier. At 0.29, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between QQQ and SSTI?
As of 2026-08-27, the correlation of weekly returns between QQQ and SSTI is 0.29 over 3 years, 0.23 over 1 year and 0.30 over 5 years.
Is SSTI a good diversifier for QQQ?
A fair diversifier. At 0.29, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.29 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-ssti.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/qqq-vs-ssti/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: QQQ correlations · SSTI correlations
