CET vs QQQ: Correlation
How closely do Central Securities Corporation (CET) and Invesco QQQ Trust (QQQ) trade together? Their weekly returns over three years give a correlation of 0.79, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CET and QQQ?
Across a 3-year window, the weekly returns of CET and QQQ correlate at 0.79, strong. Lately the two have drifted apart, with the 1-year correlation at 0.68 versus 0.79 over 3 years. Stretching to 5 years gives 0.76, with an annualized covariance of 198.1 %².
By 3-year correlation, QQQ places #6 of the 38 assets tracked against CET. Over the last 12 months QQQ came out ahead by 10.6 percentage points (+15.7% against +26.3%). Risk is not evenly split, since QQQ carries 1.5 times the volatility of the other side.
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.
CET vs QQQ: side by side
| CET (Central Securities Corporation) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | +15.7% | +26.3% |
| 5-year return | +73.3% | +95.4% |
| Volatility (ann.) | 12.8% | 19.6% |
| Beta vs S&P 500 | 0.78 | 1.28 |
| Max drawdown (3Y) | -15.4% | -22.8% |
| Market cap | – | – |
| P/E (trailing) | 7.3 | – |
| Dividend yield | 5.03% | 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 | CET | QQQ |
|---|---|---|
| 2022 | -19.7% | -32.6% |
| 2023 | +19.2% | +54.9% |
| 2024 | +26.8% | +25.6% |
| 2025 | +17.2% | +20.8% |
| 2026 | +8.3% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CET and QQQ good diversifiers for each other?
To a limited degree. At 0.79 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between CET and QQQ?
As of 2026-08-27, the correlation of weekly returns between CET and QQQ is 0.79 over 3 years, 0.68 over 1 year and 0.76 over 5 years.
Is QQQ a good diversifier for CET?
To a limited degree. At 0.79 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.79 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/cet-vs-qqq.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/cet-vs-qqq/)
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Related comparisons
Hubs: CET correlations · QQQ correlations
