QQQ vs QSI: Correlation
Measured on weekly returns over the past three years, Invesco QQQ Trust (QQQ) and Quantum-Si Incorporated (QSI) carry a correlation of 0.27, a weak link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are QQQ and QSI?
Over the past 3 years, QQQ and QSI moved with a correlation of 0.27, which is weak. Lately the two have moved closer together, with the 1-year correlation at 0.53 versus 0.27 over 3 years. Over 5 years the correlation is 0.35, and the annualized covariance of weekly returns is 807.7 %².
Within QQQ's tracked universe of 4755 assets, QSI comes in at #1898 by 3-year correlation. Correlation aside, the last 12 months split them widely, with QQQ ahead by 57.1 points (+26.3% versus -30.8%). One caveat on sizing: QSI is 7.8 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 QSI: side by side
| QQQ (Invesco QQQ Trust) | QSI (Quantum-Si Incorporated) | |
|---|---|---|
| 1-year return | +26.3% | -30.8% |
| 5-year return | +95.4% | -91.5% |
| Volatility (ann.) | 19.6% | 152.9% |
| Beta vs S&P 500 | 1.28 | 2.93 |
| Max drawdown (3Y) | -22.8% | -83.6% |
| Market cap | – | $0.2B |
| 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 | QSI |
|---|---|---|
| 2022 | -32.6% | -76.7% |
| 2023 | +54.9% | +9.8% |
| 2024 | +25.6% | +34.3% |
| 2025 | +20.8% | -59.3% |
| 2026 | +17.7% | -27.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are QQQ and QSI good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.27 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between QQQ and QSI?
As of 2026-08-27, the correlation of weekly returns between QQQ and QSI is 0.27 over 3 years, 0.53 over 1 year and 0.35 over 5 years.
Is QSI a good diversifier for QQQ?
Yes, to a useful degree: a correlation of 0.27 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.27 mean?
A reading of 0.27 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/qqq-vs-qsi.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/qqq-vs-qsi/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: QQQ correlations · QSI correlations
