QQQ vs RCUS: Correlation
Measured on weekly returns over the past three years, Invesco QQQ Trust (QQQ) and Arcus Biosciences, Inc. (RCUS) carry a correlation of 0.37, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are QQQ and RCUS?
Across a 3-year window, the weekly returns of QQQ and RCUS correlate at 0.37, moderate. Lately the two have drifted apart, with the 1-year correlation at 0.17 versus 0.37 over 3 years. Stretching to 5 years gives 0.38, with an annualized covariance of 427.4 %².
Within QQQ's tracked universe of 4755 assets, RCUS comes in at #864 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months RCUS outperformed by 163.4 percentage points (+26.3% for QQQ against +189.7% for RCUS). Note the risk asymmetry: RCUS runs 3.0 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 RCUS: side by side
| QQQ (Invesco QQQ Trust) | RCUS (Arcus Biosciences, Inc.) | |
|---|---|---|
| 1-year return | +26.3% | +189.7% |
| 5-year return | +95.4% | +3.1% |
| Volatility (ann.) | 19.6% | 59.0% |
| Beta vs S&P 500 | 1.28 | 1.71 |
| Max drawdown (3Y) | -22.8% | -69.5% |
| Market cap | – | $3.8B |
| 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 | RCUS |
|---|---|---|
| 2022 | -32.6% | -48.9% |
| 2023 | +54.9% | -7.6% |
| 2024 | +25.6% | -22.0% |
| 2025 | +20.8% | +60.0% |
| 2026 | +17.7% | +28.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are QQQ and RCUS good diversifiers for each other?
A fair diversifier. At 0.37, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between QQQ and RCUS?
Using weekly returns as of 2026-08-27: 0.37 over 3 years, with 0.17 over the last year and 0.38 over 5 years.
Is RCUS a good diversifier for QQQ?
A fair diversifier. At 0.37, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.37 mean?
On the −1 to +1 scale, 0.37 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-rcus.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/qqq-vs-rcus/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: QQQ correlations · RCUS correlations
