BJDX vs QQQ: Correlation
Bluejay Diagnostics, Inc. (BJDX) and Invesco QQQ Trust (QQQ) show a near-zero relationship: their 3-year correlation of weekly returns is -0.01.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BJDX and QQQ?
Across a 3-year window, the weekly returns of BJDX and QQQ correlate at -0.01, near zero, meaning they move largely independently. The relationship has been stable: the 1-year correlation (-0.11) sits close to the 3-year figure. Stretching to 5 years gives 0.03, with an annualized covariance of -27.6 %².
Within BJDX's tracked universe of 19 assets, QQQ comes in at #6 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months QQQ outperformed by 109.7 percentage points (-83.4% for BJDX against +26.3% for QQQ). One caveat on sizing: BJDX is 7.7 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.
BJDX vs QQQ: side by side
| BJDX (Bluejay Diagnostics, Inc.) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | -83.4% | +26.3% |
| 5-year return | -100.0% | +95.4% |
| Volatility (ann.) | 151.7% | 19.6% |
| Beta vs S&P 500 | -0.30 | 1.28 |
| Max drawdown (3Y) | -100.0% | -22.8% |
| Market cap | – | – |
| P/E (trailing) | – | – |
| 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 | BJDX | QQQ |
|---|---|---|
| 2022 | -85.2% | -32.6% |
| 2023 | -83.9% | +54.9% |
| 2024 | -99.0% | +25.6% |
| 2025 | -86.3% | +20.8% |
| 2026 | -65.9% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BJDX and QQQ good diversifiers for each other?
By historical standards, yes. A correlation of -0.01 means the two rarely move for the same reasons.
FAQ
What is the correlation between BJDX and QQQ?
The BJDX/QQQ correlation stands at -0.01 on a 3-year window (1 year: -0.11, 5 years: 0.03), computed from weekly returns as of 2026-08-27.
Is QQQ a good diversifier for BJDX?
By historical standards, yes. A correlation of -0.01 means the two rarely move for the same reasons.
What does a correlation of -0.01 mean?
A reading of -0.01 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
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[](https://www.pairbook.io/pair/bjdx-vs-qqq/)
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Related comparisons
Hubs: BJDX correlations · QQQ correlations
