DCOY vs QQQ: Correlation
Decoy Therapeutics Inc. (DCOY) and Invesco QQQ Trust (QQQ) show a weak relationship: their 3-year correlation of weekly returns is 0.16.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are DCOY and QQQ?
On 3 years of weekly data the DCOY/QQQ correlation comes out at 0.16, weak. The link has tightened recently: the 1-year correlation (0.29) runs above the 3-year figure (0.16). The 5-year figure is 0.11, and annualized covariance runs at 381.4 %².
QQQ is close to the least connected end of DCOY's tracked universe, ranking #7 of 10. The last year tells two different stories: QQQ led by 122.1 percentage points, -95.8% for DCOY against +26.3% for QQQ. One caveat on sizing: DCOY is 6.1 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.
DCOY vs QQQ: side by side
| DCOY (Decoy Therapeutics Inc.) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | -95.8% | +26.3% |
| 5-year return | -100.0% | +95.4% |
| Volatility (ann.) | 120.2% | 19.6% |
| Beta vs S&P 500 | 1.56 | 1.28 |
| Max drawdown (3Y) | -99.8% | -22.8% |
| Market cap | – | – |
| P/E (trailing) | 0.0 | – |
| Dividend yield | 0.00% | 0.44% |
| Expense ratio | – | 0.18% |
| Assets under management | – | $452.8B |
| Sector / category | US Listed | ETF · US Growth & Tech |
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 | DCOY | QQQ |
|---|---|---|
| 2022 | -87.7% | -32.6% |
| 2023 | -57.5% | +54.9% |
| 2024 | -64.6% | +25.6% |
| 2025 | -97.6% | +20.8% |
| 2026 | -61.9% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are DCOY and QQQ good diversifiers for each other?
By historical standards, yes. A correlation of 0.16 means the two rarely move for the same reasons.
FAQ
What is the correlation between DCOY and QQQ?
Using weekly returns as of 2026-08-27: 0.16 over 3 years, with 0.29 over the last year and 0.11 over 5 years.
Is QQQ a good diversifier for DCOY?
By historical standards, yes. A correlation of 0.16 means the two rarely move for the same reasons.
What does a correlation of 0.16 mean?
On the −1 to +1 scale, 0.16 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/dcoy-vs-qqq.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/dcoy-vs-qqq/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: DCOY correlations · QQQ correlations
