NPK vs QQQ: Correlation
How closely do National Presto Industries, Inc. (NPK) and Invesco QQQ Trust (QQQ) trade together? Their weekly returns over three years give a correlation of 0.29, which is weak.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are NPK and QQQ?
Across a 3-year window, the weekly returns of NPK and QQQ correlate at 0.29, weak. Lately the two have drifted apart, with the 1-year correlation at 0.13 versus 0.29 over 3 years. Stretching to 5 years gives 0.35, with an annualized covariance of 164.6 %².
Among the 10 assets we track against NPK, QQQ sits near the bottom by co-movement, at rank #7. Correlation aside, the last 12 months split them widely, with NPK ahead by 17.9 points (+44.2% versus +26.3%).
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.
NPK vs QQQ: side by side
| NPK (National Presto Industries, Inc.) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | +44.2% | +26.3% |
| 5-year return | +115.3% | +95.4% |
| Volatility (ann.) | 28.9% | 19.6% |
| Beta vs S&P 500 | 0.70 | 1.28 |
| Max drawdown (3Y) | -23.3% | -22.8% |
| Market cap | $1.1B | – |
| P/E (trailing) | 25.2 | – |
| Dividend yield | 0.66% | 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 | NPK | QQQ |
|---|---|---|
| 2022 | -11.8% | -32.6% |
| 2023 | +23.8% | +54.9% |
| 2024 | +29.9% | +25.6% |
| 2025 | +9.6% | +20.8% |
| 2026 | +44.8% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are NPK and QQQ good diversifiers for each other?
Reasonably. At 0.29, NPK and QQQ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between NPK and QQQ?
Using weekly returns as of 2026-08-27: 0.29 over 3 years, with 0.13 over the last year and 0.35 over 5 years.
Is QQQ a good diversifier for NPK?
Reasonably. At 0.29, NPK and QQQ keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.29 mean?
On the −1 to +1 scale, 0.29 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/npk-vs-qqq.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/npk-vs-qqq/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: NPK correlations · QQQ correlations
