QQQ vs ZSTK: Correlation
Measured on weekly returns over the past three years, Invesco QQQ Trust (QQQ) and ZeroStack Corp. (ZSTK) carry a correlation of 0.16, a weak link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are QQQ and ZSTK?
Across a 3-year window, the weekly returns of QQQ and ZSTK correlate at 0.16, weak. The relationship has been stable: the 1-year correlation (0.08) sits close to the 3-year figure. Stretching to 5 years gives 0.24, with an annualized covariance of 486.3 %².
By 3-year correlation, ZSTK places #3299 of the 4755 assets tracked against QQQ. Their recent paths diverged sharply: over the last 12 months QQQ outperformed by 99.7 percentage points (+26.3% for QQQ against -73.4% for ZSTK). Note the risk asymmetry: ZSTK runs 7.8 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 ZSTK: side by side
| QQQ (Invesco QQQ Trust) | ZSTK (ZeroStack Corp.) | |
|---|---|---|
| 1-year return | +26.3% | -73.4% |
| 5-year return | +95.4% | -99.9% |
| Volatility (ann.) | 19.6% | 153.8% |
| Beta vs S&P 500 | 1.28 | 2.10 |
| Max drawdown (3Y) | -22.8% | -99.1% |
| 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 |
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 | QQQ | ZSTK |
|---|---|---|
| 2022 | -32.6% | -87.2% |
| 2023 | +54.9% | -70.4% |
| 2024 | +25.6% | -23.7% |
| 2025 | +20.8% | -84.4% |
| 2026 | +17.7% | -6.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are QQQ and ZSTK good diversifiers for each other?
Yes. With a correlation of 0.16, QQQ and ZSTK have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between QQQ and ZSTK?
As of 2026-08-27, the correlation of weekly returns between QQQ and ZSTK is 0.16 over 3 years, 0.08 over 1 year and 0.24 over 5 years.
Is ZSTK a good diversifier for QQQ?
Yes. With a correlation of 0.16, QQQ and ZSTK have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
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/qqq-vs-zstk.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/qqq-vs-zstk/)
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Related comparisons
Hubs: QQQ correlations · ZSTK correlations
